I think it is different sometimes, but usually it is the main rides that are popular. When I went to the Halloween one this Oct. it was Splash Mountain, Big Thunder Mountain Railroad, Pirates, Peter Pan, Haunted Mansion, Snow White, Space Mountain....you know, the main ones. I can't remember every one that was open, but it is usually the majority of ones you would want to ride. There may be a list somewhere, but I just haven't found it yet. It is similar to the E-nights in rides that are open(which may be listed on allearsnet.com if you look around), but it always seems that the special party have more open.