This sounds like a great idea for an AM station. The Travelers Information Stations/Visitors Information Radio formats had varying levels of success in the past depending on the market and the pricing. The real drawback on tourism formats is the off season. The casinos do not have an off season.
Such a station will never be a top biller but it is an easy format to do with little maintenance because the audience changes every few days. As one person told me, your content stays the same because your audience is constantly turning. During the first year they generated a library of all the elements of programming. Except for a rare update, nothing much changed. The monthly operating budget is very minimal. You can sure be a computer in a closet. Considering they're a group owner, they have staff to do any updates as part of their usual production time.
If half the casinos will allocate a small piece of the advertising pie, the station will do better than almost any other format can.
VIR/TIS formats generally billed about $5,000 to $18,000 a month up to a couple of decades ago (not adjusted for inflation). A smart operator has advertisers and has sold the concept of allocating a small amount of the occupancy tax dollars to support the station's bottom line by selling the idea to the entity that controls where those dollars go. Smart operators ask state, local and federal agencies to put up Visitor Information tune ... signs along highways. That gets your non-commercial content supported through occupancy tax dollars, the sale of commercials (running every 15 to 60 minutes) and free publicity with highway signage. Most such stations are 50% ads and 50% information. Most repeat content on a cycle of 15 minutes to 60 minutes.