There are many instances of emcees, announcers, producers, directors, etc. commuting from SoCal to Las Vegas for shows that taped there. I have never, ever understood how that works out economically given the time and travel expense involved, even if they have a "deal" with a hotel/casino. Seems to me it would be a lot cheaper, less time consuming and more convenient to have cast and company simply drive to Burbank, Bev and Fair, Prospect and Talmadge or Metromedia square to tape 10 shows over two days.
Not an emcee, but Johnny Olson used to divide his time between his apartment here in West Hollywood and his ranch in West Virginia. Prior to that he used to commute to Miami Beach for the Gleason show.