There are bars in the park, but they have their own rules, so you gotta ask. Example:
Dad and I came back to USF at 4pm. Hit the bar on the way to MIB and had 2 draft beers at the happy hour price of about $2.50 each. A couple hours later at 6pm, we're on the other side of the park at Kong. Go in the Irish pub and order 2 beers. They tell us happy hour only runs until 5pm, each draft beer was $5. Dad wasn't thrilled with that one.
Then we're back over at IOA at 8pm. I hit the bar next to DD and order a Long Island Ice Tea, they're about $6.50.
These are the best deals, skip the beer go for the Long Islands.