We were allowed to eat/drink in lines last week provided we threw it out or put the cap on it before actually getting on the ride. There were specific instructions no food or drink inside both Hall of Presidents and Carousel of Progress. I'm happy that rule exists as both shows are very quiet and a slurping or crunching noise would be pretty distracting I would think. We were allowed to take drinks that had caps in in our bags, but they had to be in our bags. No drinks with straws, etc, like a fountain drink.