At the Grand Arena for a conference. Great venue. I don't know how many it seat but I would guess 16,000 or so. Easy to find you way around.
The staff is knowledgeable and very helpful.
My one piece of advice is when exiting the event, go DOWN to the event level and exit outside. It will save you a lot of time, and if your claustrophobic, a lot of anxiety.
The main level exit is very congested as there is only four doors to exit the building (into the lobby, which exits into the casino). To clarify, I don't mean four giant arena style doors. I mean four single doors.
So when 16,000 people are leaving an event it doesn't exactly clear quickly.
Drop to the event level. Go out under the bleachers. Exit outside and go around. Don't be a sheeple!