I went to Peru for 10 days and lost 3 lbs while away. I did 80 oz of water every day, I walked a lot, I did all my HNS's and when it came to food, I did the best I could with what was available (and even had a gelato one day)
I erred on the side of eating less rather than more, I didn't make it an excuse to order what i would WANT, but I paid attention to getting proteins and vegetables - the starches seem to be a bit optional anyway since you don't have to try hard to get a little starch. As for the salt, it doesn't really impact your fat loss, just makes you retain water making it harder to know when you lose, so don't worry too much about that either because it will flush out when you return.
I went on my trip about 4 weeks into my program and was really anxious because I didn't want it to mess me up, but I went to weigh in the day my flight got back (-3lbs even WITH the plane water weight i'm sure I had) and I did metaquick right when I got back to get really on program.
Remember, this program is a dedication of many months and so long as you try to stay as close to plan as you can every day on your trip, it's not going to make or break this program for you. If you don't go to Japan everyday, remember you are on a vacation, enjoy yourself and just eat healthy, drink water and exercise. I'm sure you'll be just fine and it won't delay your goal date.
Resign Goal - Oct 18