Trying to decide what to do on an extra day

[hardrocker1]

Our party consists of 4 adults and 2 boys, one is 16 and the other is 5. We will be in Orlando for a total of 8 days. In mid-June. We have 5 day park-hopper passes for the World, then we planned to use one day for Honeymoon Island/beach, then we have an extra day outside of our flight days. Here is our options, and I want input from you all on them:
--Seaworld
--Universal Studios
--Downtown Disney
--one of the water parks

We took a family poll and we are all divided. My solution was to put it all in a hat and draw one. I thought Seaworld might be educational for the 5 year old, my hubs is leaning towards Downtown Disney to sightsee and go on a roller coaster simulator, both hubs and the teenager said yes to a water park, the teenager is pushing for Universal as his main choice because back in 2005 when we went I was sick on our Universal day so we only got a few hours there and only got to ride 2 rides.

I wouldn't mind Harry Potter land as I'm a big fan, but we can't afford the park-hopper tickets for IOA and Universal.

What say all of you? Pros, cons, perks of each?

Blessings, Michelle

P.S. We are staying at the Swan.

 

[Portugal1000]

If your ticket includes the water park option then I would definitely say one of the Disney waterparks. If it doesn't then I would go for Aquatica as its great. My son is 12 and definitely his favourite water park. Also might be a bit more relaxing than another park like Universal, although that is my sons absolute favourite place. We have 3 weeks in July/August and costing us £550 to add Universal on for 2 days so not cheap.
We love all your options so its going to be a difficult choice. Good luck and have a great time.

 

[mguedes]

I would choose Universal because of the new Transformers ride. But this is a personal preference.