Rainforest does not close after lunch and reopen for dinner as most sit down restaurants do. It is open continuously. (And I'm not positive, but I think the menu is the same for lunch and dinner, so this is one of those restaurants where the eat-a-late-lunch-to-save-$ doesn't apply). According to the Passporter book, the Rainforest in AK is open from 8:00 a.m. - 6:30 p.m. Be aware that this restaurant typically has long waits and a PS is strongly suggested. (You can call up to 120 days ahead). But, even with a PS, you will wait, just maybe not as long.