Steve,
In my experience, tons of hotels contract with MSCs on a regional, and even a property-by-property, basis. Many "name brand" hotels are not owned by the "brand," as evidenced by the recent sale of the Westin in Manhattan by the cash-strapped Emirate-based company that owned it. That Westin presents under the same "brand" group as Sheraton Hotels, but anyone who wants to market to it, needs to market to the owner-of-record or the on-site management.
This all makes the job of the MSCs trying to market anything to hotels absolutely nutty. Of course, that fragments the market, so we shoppers have to search for the MSC that happens to have a particular property or group of commonly managed hotel properties. (sigh)
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.