I happened to catch a glimpse of one of the Mirage Gulfstream’s and it sparked my interest.
The MGM Mirage have the following
N721MM (GV)
N722MM (G-IV)
N720MM is a 737-700 but hasn’t moved since under that N number since. October.
flightaware.com/live/flight/N720MM
flightaware.com/live/flight/N721MM
flightaware.com/live/flight/N722MM
Wynn Resorts has a few apparently…
N88WR (737-700)
N711SW (G-IV)
flightaware.com/live/flight/N88WR
flightaware.com/live/flight/N711SW
Possibly the Venetian
N108MS (737-700)
N804MS (767-300)
flightaware.com/live/flight/N108MS
flightaware.com/live/flight/N804MS
What about Mandalay Bay? Bellagio? I’m pretty sure the Maloof Brothers (The Palms) have a Gulfstream but can’t find any info on it.