Isn't vacation fun?  Do want you want , go where you want and of course eat what you want right?   That's the part that gets us a little confused.  You know the part about eat what you want.  My recent vacation was great and I spoiled myself with the odd sweet delight.  But my hubby and I decided to detox and I mean getting back to just eating the right things and staying on track.  When we vacation , all the regular routine seems to just disappear for some reason and it shouldn't.  I don't call it dieting at all because it sounds so restrictive and it' shouldn't be if you do things right .  (like reward yourself once a week with a little treat)   Don't forget soemthing I try to never do is take a vacation from exercise.  Just remember all it takes is a half hour walk and you feel energized.