Advice from the native.
If you like roller coasters then Islands of Adventure is the place to go. As for night life... I would definitely recommend City Walk at Universal Studios. They have 6-8 theme bars with incredible nightlife and it's a much better deal than Pleasure Island. Downtown Orlando is cool on Friday nights IF you have a local to serve as a guide b/c the downtown area is very disorganized.
Hope this helps. Have a safe trip.
