I understand the wait is up to January. We werer just there and September was no reservation required. Wall in only. Fantastic exhibition!
1st Wednesday of each month you can go online to put in for some. Up to six passes.
They have same day passes, drawback is they are released online at 6:30a. Or you can walk up and hope some people have extra passes. I know it's not an ideal solution but it's the only thing I can think of. Call directly
Free after 1.00 pm unmissable visit
You should be able to get the online. However I think you can only get 4 tickets at a time
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