Here is something I have post before however I have made some changes:
Heres 4 thoughts:
1) The Boardwalk comes to mind! Start there, make an ADR at one of the great restaurants located at any of the Epcot resorts, later have a drink at a lounge (may I suggest blue zoo @ the Dolphin its dim lit and romanticly hip) then stroll around the lake and wait for Illuminations or party the night away at JellyRolls.
2) If DTD is more your thing do what I just did back in January, have dinner at the Turf Club then take a short walk around the lake over to the Marketplace and have desert at Goofy's Candy Co. (any lakeside seat will do for enjoying your treats liked the huge chocolate covered strawberries), shop a little around the stores in the Marketplace, then take a trip over to Fuego (Pleasure Island) for a few drinks then wander around and see what other entertainment is availible on Pleasure Island and the Westside. (if the Turf Club doesnt strike your fancy consider any of the many other dining locals in DTD)
3) Have dinner at AKL (I'm a fan of all but for a date night consider Sanna) or go to CSR (Maya Grill is wonderful) then have a drink at either Victoria Falls (AKL Oh and don't for get to check out the animals) or Laguna bar (CSR consider relaxing in a hamock around Lago Dorado) then either way head to Rix Lounge @ CSR for dancing till the wee hours.
4) Do you like fireworks and favor the Magic Kingdom? Well then start at one of the monorail resorts like the Grand Floridian Cafe (GFR), Kona Cafe (Poly), the Wave (CR), or head over to WL for Artist Pointe. If those are still a little pricey then consider packing a blanket go to one of the CS options in anyone of the Monorail resorts and pick up some items to have a picnic on the beach maybe even a bottle of wine or some champagne. Either way go to the one of the resorts beaches (Poly os my personal favorite and check out the fireworks at MK and wait around for the Water Paegant on Seven Seas lagoon and Bay lake.
Have a wonderful time! :wave: