JC,
If you call Moor’s Resort, make sure you tell them you’re coming down for the Team Supreme tourney. They usually set aside rooms/cabins for events like this.
The first time I called to make reservations for the Stren Series tourney in June, they didn’t really have much available. When I called back I happened to mention that I was coming down for the Stren Series and suddenly had multiple options that worked much better.
Worth a shot if you haven’t already tried it.