cjmclaughlin10 said: "I know there is no way to be certain, but do we think they will offer rush for Sunday’s performance?"
They have a decent amount of partial-view seats they only sell in person. For a super-sold-out show, they may unload those in advance for, I don't know, $79 or something, but I imagine they are saving at least a few for the day-of since I've seen fully sold-out final performances offer rush in the past. That said, not a guarantee, as you said, plus I'm sure people will get there at like 5 AM to try and secure them....