OP, I haven't tried this method so I don't know what the prices are like but you can get discounted tickets to attractions at the Orlando Premium Outlets:
http://www.premiumoutlets.com/outlets/outlet.asp?id=17

Join the Premium Outlets VIP club (which is free) and go to the "deals around town" link in the VIP club. They list discounts on tickets for lots of area attractions including Universal and Disney. You have to purchase the tickets at the Info Center booth in the outlet in order to get the discount, however.

Have a great trip. I have heard that Mythos at Islands of Adventure is supposed to be a great restaurant.