On Saturday at Webster Bank Arena, I was standing in line and talking to a couple guys (UConn fans) who had already purchased their tickets to Dallas, before MD bowed out and before UConn had even taken the floor vs UCLA.
I wouldn't worry too much about attendance in Dallas at the FF. While there may be a bunch of folks from Waco trying to unload their tickets, there will be a sea of blue Husky fans ready to snatch them up.
I would also point out that last season's FF in Indy was supposed to be almost a home game for the Irish. But ND stumbled and the FF ended up with 2 west coach teams, Cinderella Syracuse and that team from Northeastern CT. As far as I could tell, there wasn't an empty seat in the place.