We have been to TL and BB around 5 times each, mostly in June. Whenever we stayed late, there was a big exodus around 4:30 as everyone left for dinner.
Back in 1997 we were at TL in June and they were having some summer nights promo where it didn't close until 9:00 or 10:00 pm. We left around 3:00, got some dinner, and came back for the evening. It was great fun with a DJ and prizes for Limbo, hula hoop, trivia, etc. I wish they would bring that back.