Tokyo: Ginza, Yurakucho, and environs

Finding healthy breakfast alternatives at an airport can prove difficult. I always travel with an insulated travel mug. Before leaving home I fill it with a high-protein cereal and then request low-fat milk on the flight.

When you change your clocks back or forward, be sure to check the expiration date on all your frequent-flier miles. This way they're checked twice a year. We overlooked one of the many accounts in our household and lost a free ticket when the miles expired.

Ever since my children were small, I've carried recent, wallet-size pictures of them when we all go on vacation, in case we get separated. Now that they are teenagers and traveling with friends' families, too, I send pictures for the other family to bring along with them. I also write my telephone numbers on the back of the pictures so they know where to reach me in an emergency.

Know your PINs! My husband and I left home with very little cash on us, and instead of stopping to get money at the airport, my husband--ever the procrastinator--decided to wait until we got to Cancún to use his ATM card. Guess what? It didn't work in any of the machines. And although he had several credit cards for cash advances, he didn't know the PINs off the top of his head. We charged everything we could during our stay, but most of the markets don't take credit cards. Needless to say, I didn't come home with a lot of souvenirs.

Don't assume you can save a spot at the pool with your towel. Cruise lines give you one pool towel at the start of the cruise. If you don't have it (or a cleaned trade-in) at the end, you'll get charged. If you let it out of your sight, you run the risk of losing it or having it stolen by a fellow cruiser.

Instead of packing a complete shaving kit, my husband fills his wide-mouth Nalgene water bottle with items such as razors, spare contact lenses, eyeglasses, toothbrush, and so on. This turned out to be particularly useful on our trip to Costa Rica, where we also took the bottle on our day hikes to volcanoes and the jungle.

Anyone tired of the same boring postcards that are found at every roadside tourist trap should try shopping for vintage postcards at an antiques shop. They're a great addition to any photo album, as they often show what the local attractions looked like prior to development.

Pick just two colors to mix and match throughout your trip. You'll cut down on luggage, not least because you won't have to bring a bunch of shoes to match a wide assortment of colors.

Carry a Polaroid camera when traveling to developing countries. In Cambodia, several village children gathered around us, posed enthusiastically for pictures, and were fascinated by their images in our digital camera. We wanted to send them the pictures, but they were unable to tell us their address. Polaroids would have solved the problem!

Everyone knows that duct tape is great for helping out in travel emergencies, but no one wants to lug around a bulky roll of the stuff. By wrapping a few feet onto a pencil or ballpoint pen, you'll get a miniature roll that does not take up much in the way of additional space.

When you go to a convention or trade show, don't assume that the official prices at recommended hotels are the best you can do. Go to the hotel Web site. I recently got an AARP rate at a major hotel that was 30 percent below the special price offered through the tradeshow sponsors. AAA discounts often work, too.

Rather than automatically using your hotel's valet parking, you should check to see if there's an adjacent parking lot or garage that offers a better rate. On a recent trip, I was able to park across the street from my hotel for $10 per day--versus $27 per day to valet park with the hotel.

Place a coin over the veins on the inside of your wrist (about two finger widths from the base of your palm) and secure it in place with a rubber band or ponytail holder. The gentle pressure of the coin will stimulate nerves that control nausea, just like the motion-sickness bands that are sold at drugstores.

In order to keep track of my bags, I use a small metal bell--the kind dancers from India wear on their ankles. I thread it with fishing line and tie it to my carry-on. If anyone touches my bag after I set it down, the bell chimes. It's not a very obtrusive sound, but it's distinctive enough for me to notice if a thief is trying to get into my things. The same bell can be hung on the doorknob inside your hotel room.

Recycle the long plastic bags in which you receive your home-delivered newspapers. Slip your shoes into the bags before packing them in your suitcase.

If you've accumulated more souvenirs on your trip than you can carry, drive your rental car up to curbside check-in, then return the vehicle and come back on the shuttle bus with only your carry-on. This only works if there's no check-in line, but can save dragging your luggage onto the shuttle bus, across parking lots, etc.

A simple but effective anti-pickpocketing measure is to fasten a safety pin across the opening of the pants pocket on the inside. Leave enough room to pull your wallet out with some effort, but not enough for a quick hand to lift it in a second or two.

Before you head to the airport, stop by the front desk of your hotel or cruise ship and ask if they'll print your boarding pass for you. It'll save Internet browsing fees and time at check-in. It's worked for me at several Marriott hotels and on a Celebrity cruise.

The help of a concierge at an expensive hotel is available even if you're staying at a motel across the street. Go to the concierge with $5 (or whatever the assistance is worth to you) held discreetly but visibly in your hand. Chances are you won't be asked whether you're staying at the hotel. This worked for us once when we were stranded by a blizzard. We tried to rebook our flights on our own, but phones at the airlines were busy for two days straight. The concierge at a fancy hotel a few blocks away got through on his first try and managed to rearrange our flights for us.

In areas where the majority of people don't speak English, head to an Internet café. In our experience, they're full of friendly young people anxious to practice their English.

Therm-a-Rest's Compressible Pillow is perfect for the plane. It comes in three sizes, packs smaller and expands bigger than any other pillow, and is machine washable. Whenever I pull mine out of my carry-on, I get jealous stares: People always ask where they can get one. REI sells the pillows for $18 to $25, depending on the size (rei.com).

Spring skiing often means a wild temperature shift from morning to afternoon. If you want the option of removing outer layers or switching to a lighter ski jacket midday, attach the lift ticket to your clothing with a split-ring key ring. You'll be able to move your ticket as the weather warms up.

Sign up for guest programs at every hotel chain that offers one, even if you haven't stayed at that hotel before or think you may not travel enough to reap benefits from multiple stays. Some programs send coupons for discounted rooms or complimentary room upgrades just for being a member. After signing up for the Omni Hotels Select Guest program, I received a coupon that I was able to redeem for a room in Chicago for $80 per night.

Make a master list of jobs to do around the house before you leave (hold the mail, water the plants, take out the garbage). Keep the list on your computer, print it out, then check off each job as it gets done. You'll be able to go without worrying that you forgot to stop the newspaper.

A bike tour will offer a good introduction to a place, and you'll cover much more ground than if you were on foot. In Buenos Aires, for example, Lan & Kramer Bike Tours (biketours.com.ar) has a few guided itineraries that are fun for all ages and abilities.

If I plan to travel to several countries that use different currencies, I pack a few cloth change purses: U.S. dollars go into one, British pounds in another, euros in a third, etc. When I'm sightseeing, I carry only the money I need; the purses that I'm not using are locked away in the hotel safe. I avoid fumbling around in shops and mixing up coins that look alike. Plus,I always know exactly how much cash I have.

My husband and I create personal cards (like business cards) before we leave home. We put our name, address, phone, and email address on them, as well as a picture of us. How many people have gotten home from a trip, looked at a slip of paper with a name and address, and wondered, Who is this? The picture helps link a name to a face.

Save major bucks by going onto eBay and purchasing coupons and gift certificates that others don't want or can't use for lodging, transportation, food, and admissions. I've found great discounts for airline and Amtrak tickets; car rentals; entrance to amusement parks such as SeaWorld, Disney, or Universal Studios; as well as overnights at many hotels. For example, I bought a $30 savings coupon at SeaWorld for only $1. Simply search for your destination and then type in "coupon" or "gift certificate."

On a trip to Molokai, the plane we were on was small, and luggage was crammed in every which way. At baggage claim, we noticed that someone had packed a bottle of Pine-Sol, and it had broken and leaked everywhere. Now we line our suitcases with garbage bags to protect our clothes—just in case. (It's also smart in case your bag gets left on the tarmac in a downpour.)

Don't settle for the first answer to your travel question. If you need flight information, it's a good idea to phone the airline more than once and ask the same question. Recently, I wanted to see if I could fly standby on an earlier flight the same day. The first time I called, I was told that the earlier flight was booked. The second time, however, an agent said there were in fact seats available, and I could certainly fly standby. In the end, not only was I able to get on the flight, but I was upgraded to first class.