golfer: On my trip, we didn’t have to worry about reheating. The food was always fresh, whether a the hotel or stopping at a restaurant with a hechsher. It was never reheated.
Another thing to bear in mind is water. If you go in the summer, make sure to bring extra money for water. You don’t realize how hot you get because it’s a dry heat, but you can easily get dehydrated. On my trip, our bus driver sold water in 1.5 liter bottles. Make sure you have money for it!