Update: My flight was cancelled at 11:45, when it should have been taking off (already an hour late). Charlote has lost favored airport status. Think it falls to either PHF, the closest one to me, as long as they have free wifi. Otherwise, it may have to go to Grenada, for all their quirks, they have wifi.
Admittedly I didn't want to use it this time because I was too lazy to look up my LIME phone number to sign it, but it was there.
So, new plan: airline provided hotel, next flight out at 7:30 AM to PHF. Hopefully there will be success then.