The aquarium is a great place for adults and kids. It was a little expensive, but well worth it. They have a AAA discount and I heard (call to confirm) that you can get in free for your birthday. We purchased a membership. It is good for a year and is tax deductable. The cost for a family is $70, so if you plan on going at least twice, it is worth the money.
My kids loved the aquarium! There were tanks of various fish, birds, sea lions.