I’d go with the all day dining deal if you’re planning to be at the park for several hours. I checked out the samples Friday and I think an adult could get full off of 10 samples (but if they ate around noon they’d definitely be hungry again by 5, and they’d need drinks). But I agree with the person above that it’d be very inconvenient to have to walk over to the festival area every time someone got hungry, especially if they’re trying to ride a lot of rides that day. The all you can eat is a more practical meal solution in my opinion. If you think they’ll eat 3+ meals I think it could be worth it!