Disney has not let this whole Frozen thing go. After opening the Frozen ride in Epcot (which replaced Maelstrom) and Anna and Elsa's Summer House meet and greet, Disney has decided to offer a Frozen Ever After Dessert Party package. The package will include drinks, desserts, seating for the Illuminations of Earth fireworks show, and guests can ride the Frozen ride after the park closes.
It looks like the package will be offered between July 1st and the 14th on Sunday, Wednesday, and Friday. The package will be $79 per adult, and $47 per child. This is an add-on to your park ticket, which is usually around $100/day during the summer.
Personally I wouldn't pay for this, since the wait time for Frozen has dropped significantly since it first opened (but still expect to wait around 1-2 hours), and you can honestly get beer and wine (and amazing desserts) from all over the World's Showcase. Plus, the fireworks show can be seen from anywhere in the showcase, so you'll have a good view no matter where you are. Unless you're planning on proposing to your significant other or it's for a special occasion, save yourself the money. There are plenty of better ways to spend money in Disney — trust me.