Hi PasadenaDreams. As you probably figured out from the link, the Vegas game watches are held at McMullins, which is west of the strip on Tropicana, next to The Orleans Casino/Hotel.
Last weekend for the EIU game, the attendance was 150+. I would expect the same for the ISU game on Saturday.
However, I'm not sure what to expect attendance wise for the Arizona game, as many (100+ I hear) of us "locals" will be in Tucson for the game. So I would expect a decent crowd at McMullins but maybe not the 150+ that have been attending. But you never know...
As far as the bar itself, ehh ... could be better, but, could be worse. But the camaraderie with fellow Hawkeye fans is worth the trip.
Regards.