They are open but very limited reservations available. You have to be on it at 6amEST on your 60 days out and MAYBE you'll see one or two resy available. But I would say most of the time, resort guests already grabbed them all during their advantage window. Keep trying because someone can always cancel. Good luck!
ETA - Sometimes the larger parties are easier to grab (4+) because most groups are 2-4 people. So if you have family/friends that would love to enjoy this experience with you, try larger group and you might have better chance.