Hotels do not assign rooms until you check in or just a few days before, normally, but it's always their perogative how they assign.
I'd make sure you noted on your ressies that you were all together and note the request to be located as close as possible together. SOG will never guarantee room locations, though, so do be prepared.....they should, however, try their best. It really just depends on how many rooms are vacated the day you check in....it's easier to get rooms when resorts are less full, but since SOG is nearly always full....you just have to hope for the best!
Good luck, and enjoy your trip!