I think that Dominic's point was that you didn't get to see enough about the Space Shuttle, and that the queues were excessive. Remember that he didn't go to the parks, so hasn't experienced REAL queues.
On the other hand Dominic did show us that there is much more to do in Florida than most of us see. After all some people aren't park people. I particularly liked the pieces about Kissimee bike meetings on Thursday evenings, and the canoe trip.
Re Discovery Cove, my impression was that the lady concerned (Julie ?) thought that it was extremely expensive. She was swimming on her own, and this experience must be better if there are more of you, after all it's difficult to remminise (SP ?) on your own.
The bottom line though was that they both enjoyed their time in Florida, and that you can have loads of fun whatever your budget.