Good luck!!! That was one bit of advice I was surprised was not in any of the books I read or on any chats. It is VERY difficult to find food or water after about 8:30 in any of the parks. A lot of the counter service places close at 9:00 and it seemed that all of the little carts that seemed so plentiful during the daylight hours were closed by 8:30. My advice is to eat early and plan ahead and get water before 8:30. We seemed to run into this problem with water a lot. The night we watched Illuminations at Epcot, we ended up eating at the Tangerine Cafe in Morocco, definitely not in my top 10 of places to eat.