We really enjoyed our visit. We arrived at 1.30 and it was fairly busy, but not crazy. We enjoyed the themed areas of the aquarium, in particular the penguins and especially the boat ride through the penguins. We lined up at the sign that said 30 minutes wait, at most it was 15. The employee at the touch pool was great with my children, sharing lots of information. I do feel like the entry price was fairly steep though $178 for 2 adults and 2 children is an expensive day out!
Not one of the best aquariums I've been to by a long shot. Tanks are quite old and not that clean looking. The whole theme looks like something from the 60s that hasn't been updated. OK if local and need a place to go with kids but for out of towners I'd give it a pass.