When I'm on the road, I try to look for vegetarian options to make sure I'm getting in veggies, as Ian suggests fish is a good option too, lower cal than meats. Good suggestions from Patience as well, I'd checkout the salad bar at the supermarket if you can get to one.
If you have to eat fast food, look up the nutritional information before hand and find some better choices, grilled chicken, skip the fries, some places have salads and wraps, most will skip the mayo if you ask, kids meals with sliced apples instead of fries, try and make sure you have an idea of what you're going to get before you get there.
I do crunches and stretches in my room, if there's not a treadmill, I try to find a safe place to walk, like a community park.
best of luck to you