Legoland CA - water park and the aquarium

We will be in Carlsbad, CA for three nights this summer. So, I thought we’d try Legoland. We have a Lego room, and the family is more excited about Legoland than Disney World. Not that I’m resentful or anything. They have a Gold Pass on sale now that includes the waterpark and the aquarium. Can anyone tell me about those?

I mention the Lego room because I’ve gathered that most people consider Legoland a one-day park. But, DH said he could spend an entire day just looking at the Lego sculptures. DD is 11 turning 12. We’ve been to Lego exhibits.