The Sublight Lounge is located in the Star Wars: Galactic Starcruiser hotel, near Disney’s Hollywood Studios park in Walt Disney World.
Yes, it does. The Sublight Lounge serves both specialty alcoholic and non-alcoholic drinks.
There are currently no official performers at the Sublight Lounge, as there are at the Crown of Corellia Dining Room. However, that doesn't mean there won't be any entertainment to enjoy.