Geo-82 is a new, adult-only lounge attached to the back-end of Spaceship Earth in Epcot. The location will only admit guests 21 and older and offer "innovative cocktails and globally influenced small plates". The location is operating with a reservation system in-place, and you're pretty much going to need a reservaion to get in – Geo-82 seems to be very popular.
There is a high-dollar fireworks party option as well that requires separate booking. The fireworks party option will secure you a window seat for the fireworks.
(*) Price ranges listed are the average cost for one main entree and one soft beverage item, unless otherwise stated. There are many combinations of appetizers, deserts and drinks that will add to your final total. Many parks also use seasonal pricing systems which result in food and beverage costs increasing at peak times. Please check with the location that you are interested in for specific pricing information.