ok, so on the 16th of feb. i'm taking a basketball trip to germany. on the island that i live on there is nooooo fast food. we only have a subway. thats it. so, i don't have any temptations to go out and eat bad foods when ever i want. we are going to be spending a WHOLE day of traveling to get to germany. we'll get to one airport at about 10am to leave, and arrive in germany at about 11pm. we usually have a 4 hour layover in the lisbon airport when ever our school sports teams travel. so we'll be surrounded by the fast food that we've been deprived of for months. we will be in germany for the week then come back the same way.
what should i do to avoid over eatting at the airports?? i'm nervous that i'm going to gain all my weight back on this trip. i'm going to try hard to not eat badly all the time. but since we won't be with our families (just highschoolers and 6 chaperones

) we'll have to eat at food courts the whole time. it's going to be really unhealthy. i'm always going to have a water with me but what else should i do??