We wanted Grand Villa this year for OKW and I messed up and didn't try to book until 7 months out and we were shut out. OKW is our home resort and we just didn't pull the trigger fast enough. The GV's at OKW are the largest and make for great holiday gatherings so my guess is it will be pretty difficult getting one 7 months out that close to a holiday.
We ended up going with 2 bedroom and a 1 bedroom which will probably work out better with 2 different families but man, I love the OKW Grand Villas!!! Good luck!!!