Tip #1: Do not, I repeat, do not buy a VIP pass from any of the homeless people on the street. I'm still too embarrassed to admit if I did this or not.
Tip #2: Do not stand in line. I did call ahead to get on the guest list AND I also got real VIP passes from a girl inside the casino, although I'm not sure if any of this helped. The bouncer didn't seem like he saw my name on the guest list, but I think if you dress the part they will let you in for free regardless.
Tip #3: Take the time to catch the Pussy Cat Dolls show! They were awesome and really entertaining.
Tip #4: If you don't like crowds, once inside give the VIP area bouncer some cash and he will let you in.