Um, first of all, you double posted. We hear you.
DC = Discovery Cove
SWF = Sea World of Florida
Is DC worth it? Yes.
The dolphin swim is 20 minutes. It's over in a flash, but it's amazing. The trainers make the dolphin do all kinds of tricks. The dolphin will give you a kiss, and you get a ride to the shore.
The lunch is included and the food is out of this world. It's served cafeteria style, but it's top notch. The food comes out fresh and it's amazing.
The 7 day pass for SWF starts anytime before or after you enter DC. Meaning, you can enter SWF with your reservation letter and they'll let you in, or you goto DC first then have 7 days of SWF afterwards with your badges.
Bring lots of Cash to buy fish food at the Key West area at SWF, because you'll want to feed the dolphins after visiting DC.
Lurk the boards here. There are many messages that will answer your questions.
Welcome aboard.
Click on my TR since you're new.
http://home.attbi.com/~robvia/SeaWorld1.htm