Hopefully the humidity won't be a factor, at least for the next few days—we had a couple of bad days of it last week but since Saturday the humidity's dropped and the weather's been almost perfect. Hope it lasts! Would be ironic if they don't have to use the roof...
I'm glad to hear that. Agree about the roof, but I can't remember a year when it didn't rain at some point during the tournament, and they've said they'll close it overnight if rain is forecast for then.
The USTA seem very excited about their roof. They apparently randomly closed it yesterday evening when Djokovic was on there and it is reportedly very noisy when it is closing or opening.
Apparently it takes 7 minutes to open/close it so I can't see that being problem.