As a fellow Disney fan, I completely understand the lost feeling. I have issues with Sea World (mostly mine as I am a total type A person) BUT my kids LOVE it, so we are doing a 3 day JUST sea World visit in June.
Yes there are 3 parks:
Sea World - Mostly shows, some rides
Discovery cove: Very limited admissions, very hands on
Aquatica: The Sea World water park.
I am not sure what you are thinking but there is lots of information about all 3 here, read through specifically about Discovery Cove as it is pricey and I think doing (or not) should be your first decision.
Second look at the website
http://www.seaworld.com/sitepage.aspx?PageID=199
IMHO it is very poorly arranged, but you can at get a calander with show times there about 3 weeks before you leave. But it does give you a general idea of what is there and ticket prices. You should also see if you want to do any tours. (We have chosen to do the Dolphin and Polar express tours)
Then I would think about Aquatica.
There are dining experiences (on the web site also but difficult to find
I use this link
http://commerce.4adventure.com/EStore/Scripts/Skins/SWF/Tours.aspx
for both tours and dining.
But dining is not as involved as Disney. Besides the shows, the only sit down resturant is Sharks Underwater grill and you need an annual pass to get an advanced seating assignment there.
Hope that helps! Sure others will chime in to! Good luck with your planning! Kate