I asked about this subject in this thread (albeit 2 years ago):
http://forumserver.twoplustwo.com/44...-wsop-1536878/
You will likely get better info in the O8 forum but here's what to expect:
1) Orleans will have 1-3 tables of 4-8 LO8 and 1-3 tables of 8-16 LO8 (3 full tables with waiting lists at peak times). Virtually a 100% chance there is a game going at any given time, just a matter of getting a seat. This is the casino known for LO8.
2) Bellagio should have a 20-40 LO8 game going (1-2 tables) unless it temporarily moves to the Rio cash games (doubt it).
3) The cash games at Rio will have a mix of games that may or may not get off, including 10-20, 15-30, 20-40, 40-80, 75-150, higher??? ... The higher stake games are more likely to run around the time of the LO8 events. If PLO8 is your thing, there may be 1-2 or 2-5 PLO8 but it's somewhat rare. If Big O8 is your thing, I think I've seen at least a list if not an actual table going once. Basically, if you don't see what you want, start a list, cross your fingers but don't expect it to go.
4) Venetian used to get 4-8, 8-16 and 15-30 LO8 and a rare 1-2 PLO8 game going. Their regular O8 game moved to Bellagio, I believe. I would say there is a decent chance a game flares up for a few hours each night during the WSOP, but don't count on it.
5) You can find low stakes (4-8) LO8 at a few other random properties like Boulder Station and Red Rock, I believe. Boulder Station will have 1-3 tables going pretty consistently.
I think that about covers it all???