Speaking of gay, you can't go to Bourbon without visiting the OZ at least once. It's amazing. It's pretty much the longest running gay club in the city that I know of, but you and your girl will seriously have a blast. You can act a fool.
Off of Bourbon is a little pub called Erin Rose, which is pretty quiet but it's almost all locals and you can get into some really good bullshitting with people.
As for skating- the Riverwalk in the evening has a few different things (it can be a bust, but still), also close to the Superdome are the Pancakes...|
(random pic off of Google).
Shout when you're down... might be able to help you on the 420.
PS: Sonic's given you some good stuff to check out. You'll find something fun no matter where you go.