At a campsite I'd be happy to start the day with my steelcut oatmeal served up with powdered (reconstituted) soymilk and a splash of splenda (the sweet stuff is as light as goosedown).
I can usually find some meatless delights from restaurants serving Italian, Mexican or other ethnic quisines.
Sometimes I'll get stuck in a meat-centric villa and be left with a lettuce salad choice. But mmost of the time I find plenty of good things to eat, even if I have to look a little closer.
I'm a vegetarian because I find it make me feel good, great, actually. I'm stronger, have more endurance, and feel much younger than I did when I was consuming animal products.