There'll be a few that won't be decorated yet. However, if you're staying till Sunday, you may get to see all you're hoping to see. A CM told me once that they're usually finished over that weekend.
That's our usual week to go, and some years I've not gotten to see the GF's decorations which went up over the weekend.
The gingerbread sales counter at the back of the GF gingerbread house will likely be open before then. Some tasty treats to be had if you enjoy gingerbread.
Do check out BC/YC. The BC gingerbread carousel will probably be done or nearly so, and the YC electric train layout is gorgeous. Both are worth a bus ride to see them, IMO.