Traveling and Maintaining Weight

I've just returned from Helsinki, Tallinn, St Petersburg and Stockholm. It is really hard to eat well and travel if you aren't focused. It started with my grandsons and their candy and chips. After that I was tempted many times with desserts and other junk foods. Despite walking for 6 hours a day, my weight increased by 3 lbs in 2 weeks. Now that I'm back in NYC, I turned it around, eating perfectly, and have already dropped 1.5 lbs. I must say, I felt really chunky with only 3 lbs extra.