For the ones I’ve gotten into, they open the door a few minutes before. Usually if you can get in 15 minutes early you have a good chance.
But I’ve tried that and sat in the waiting room…and the second 12 noon hits, the wait goes from 2 minutes to 35….and then they are sold out.
It’s pretty hit or miss. I’ve lucked out on some of them. But you really need to be lucky.
Thanks!