Personally we wouldn't be able to justify paying so much to get in and not do the dolphin swim.
We seem to have a slightly differing opinion of DC to everyone else though. We felt whilst swimming with dolphins was an amazing experience, it really wasn't good value for the $1500 our family of 5 paid.
The food was nice but the whole set up was cafeteria- like. I think this was the most efficient way to do it though.
My six year old brother had to be dragged into the dolphin lagoon for the dolphin swim because the water was so cold. He hated it. So bear this in mind when you take your young children.
The Grand Reef was quite small, and busy. The poor stingrays were being chased and practically jumped on by children, so you never really got the chance to see them in their relaxed environment.
It was a surreal experience being so close to such huge stingrays, and the dolphin swim was fantastic. But if you are on a budget, I wouldn't think DC is worth stretching for.
It was great to do once, and we still have fantastic photographs reminding us of our swim. The photographs of my six year old brother are hilarious because he looks so miserable!!! (By the way, add on another $160 or so for photos, they are irresistible!)
But the experience at DC comes second on my list of favourite things we did whilst in Orlando- the evening at MK with the parade, the Magic the Memories and You! and Wishes came first- and we didn't have to pay $1500 for that!
So go for Discovery Cove if you can do the dolphin swim, but if you can't, I just don't think the entry fee is justified at all.
Also, I think a sibling could get jealous if they had to miss the dolphin swim due to their age. Maybe it would be better to wait until they are 6. It all depends on what they are like, although personally I find the dolphins a lot more approachable than the stingrays!
Meg~ Sent from my iPhone using DISBoards