There are just come basic rules you need to follow. First and most importantly, you must set your goals and commit yourself to them. After doing so, everything else will fall into place. Just start by planning your meals and workouts ahead of time.
You deserve to feel great on vacation. Exercise to improve your mood, maintain your weight, boost your energy and sleep better at night. Once you get into the everyday motions, you will be so glad you did not give up on your fitness plan.