From my experiences, they all arrive at the venue for sound check between 330 and 430pm. Depending on how late/early they are running usually determines how long they can "mingle".
hey guys. what is the earliest any of you are looking at lining up?
also i work at a hotel downtown just 10 blocks or so from toyota center and we have some rooms for thurs and fri so let me know and i will get you a deal.
see you out there.
rich