For those of you going to Pearl Harbor and the Arizona, I believe that the way it works is that you first show up and you are given a ticket for the Arizona visit. When we went in April it was something like we showed up at 10 and were told to be back by 12, 12:30 for our tour of the Arizona. There are things to do while you wait of course (Bowfin, Museum, etc). BUT my understanding is that during peak times, your wait is a LOT longer. (ie, maybe you would show up at 10 and get told to come back at 2:00). I would assume this weekend will be high traffic. So, you will want to make sure you show up EARLY to claim your ticket.