When I was on the road every week, any hotel without Fox ALWAYS got a complaint card filled out, requesting an upgrade to a system with Fox. Recently, I declined a stay at a Marriott, and told them it was because they did not have Fox. The reservationist said they had CNN, I said no thanks.
Excellent! I also never miss a chance to fill out those hotel survey cards, complaining if there's no FNC. In person, I always act incredulous and ask "your hotel doesn't have the #1 rated cable news network in America???"