There are still rooms available at Clarion Inn & Suites West Knoxville/Turkey Creek area for $120 a night. There’s at least 1 room open now at Days Inn west Knoxville as I changed my reservations closer to Turkey Creek area.
When occupancy reaches a certain level, some hotels will no longer list rooms as available on their website. I’ve found that calling them directly will sometimes uncover an available room that is not advertised. Also, some hotels will put you on a waitlist for future cancellations.