ACTUALLY, I'm a (retired now) Public University Professor and I bought into Wyndham to beat the high cost of hotels in the DC area when I did research at the Library of Congress, the Smithsonian and the University of Maryland College Park Special Collections.
How it worked was I would always use up my points in a use year, or deposit them forward. Booked with "rented" points at $12/1000 for my conference and research travel. You get a receipt for this, which the University and grant agencies require. Stayed at Old Town Alexandria, Edisto Island, Nashville, Patriot's Place in Williamsburg, and even Chicago (when we had it)...all coming way under the per diem and really stretching out my grant money. I've used Atlanta, NYC, and National Harbor in addition to Nashville as conference hotels....once you get tenure the universities don't always pony up for your expenses and you are usually on your own dime. Took students to Nashville and Atlantic City for conferences and they thought that they were staying in a palace instead of crowding into a Motel 6 or Super 8.