Visited the aquarium on a Saturday evening thinking it might be less busy and we had friends in from out of town that were really interested in going. Lots of displays but due to the crowds it was difficult to get close or go at your own pace through the exhibits. Certain areas were so busy that we ended up just passing by.
The cost of the tickets is steep at 30$/adult - I did not feel like we really received our value for the money spent.
I would recommend going through the week, as speaking with other people who have gone it is not as packed and you can easily go at your own pace through the exhibit areas.