We arrived at the Aquarium at about 10:45am and then waited in line for about 45 minutes. That was okay the rest of our group (4) window shopped the mall. Purchase your tickets prior at the kiosk in area 6 of the mall or online.
You can buy the fun green-screen picture at the end of the tour. Make sure everyone in your party stands to the right or you'll cut someone out of the great photos!
We used a coupon from one of the mailers for $3 off each ticket, saved us a full ticket.
The exhibits were great! The kids and grandma liked them almost as much as the wife and I, almost. We had a great time.
We recommend going after lunch. The line was really short as we left.