Unofficial List:

Tropicana
Hooters
Eastside Cannery
Sunset Station
M Resort
Ellis Island
Rampart Casino
Silverton
Plaza
Fitzgerald's/The D
Bill's/Cromwell
Sahara/SLS
Circus Circus
Riviera
Linq
Palms
Texas Station
Aliante
Paris
Tuscany
Stardust
Westgate/LVS/Hilton
Both Fiesta casinos
Gold Coast
Jokers Wild
4 Queens
Las Vegas Club

and now Hard Rock

I'm sure I am forgetting a few others..