Do you really believe that hundreds of people could keep quiet about a shooting at Hooters? Maybe Hooters was just the closest point the ambulances could get to.
Bingo, if you’re not familiar with Las Vegas, (and I am very familiar with it) Hooters would be an excellent staging area for the Mandalay. It’s just off the Strip with it’s own parking lot and rapid egress from the area to all other points of Las Vegas.