Eating meat after a year and a half?

i have only been a vegetarian for about a year and a half. unfortunately im about to travel abroad where im not sure if meatless options are available (prepared dinners will be made for us, and i will tell the tour director, but not sure if he can make a change). so i am prepared to make a small break to my vegetarian lifestyle, only for this trip. what I'm wondering is if the meat will affect me and get me sick. Please don't answer on how bad of a vegetarian I am.