OMG, you are going to have such a wonderful time. My husband and I just went in May for a trip w/o kids. It was absolutely magical. We had the best time. We stayed up late to visit EMH until 1am t MK and HS, slept in, toured Epcot every day, ate at wonderful restaurants, took romantic strolls around Epcot, OKW, DTD, Polynesian, the Boardwalk; rode the ferry from DTD to OKW and just really enjoyed each others company. We stayed at OKW and really enjoyed the dining plan and the magical express. For 5 days we had no driving to do. It was wonderful.
My husband and I had so many moments recounting our trips w/the kids and all the cute things they did and said while at wdw...that we booked a surprise mini trip with them for September during the free dining promotion. We couldn't resist. We wanted to share more magical moments with them. Disney has a funny way of doing that to you.
Enjoy the whole experience...it truly is wonderful.