I agree with the waiting. When I was Bronze, I was always able to bag a decent seat on the UD. The last time 62 A/B, with 64 J/K open, but didn't want to put the Mrs. into 64J.
Right now I'm on a trip mid-Nov, and I'm the only one on the UD so far, as I'm now a SCH. I expect that to change. Thought I wouldn't mind having the UD to myself.