No, most of the dining locations will stop serving guests when the park closes, if not earlier. To be safe, I would get there about 15 to 30 minutes before the parks closes to make sure they'll be able to take your order. My family often gets a late night snack at Jolly Holiday and we have been there on evenings when they closed the doors about 15 minutes before the park closes. For right up until closing (or even a bit after), your best bet is Starbucks (on BVS or MS).