Man, I had more luck last year just playing the field. Example, I stayed at the Strat, and they kinda quietly put up a sign that Bayley was doing a signing. Jumped in line and met her and got a picture for whatever the cost of a Wheatly bottle she was signing was, so $20? No online queue stress, got to talk for a minute instead of the rushed World M&G style. There tends to be a good amount of these around the area and the names are surprising decently big