Our latest reservation was at AK for Yak and Yeti at 4:15 (the park closed at 5:00). I know online it wouldn't let us reserve any later...but it could be because there wasn't any room, not necessarily because the latest time is 45 minutes before closing. Unfortunately, I cannot tell you if we were rushed because we ended up eating dinner at 3:30 (we were hungry and tired so we couldn't wait). Don't know if that helped...but best of luck!