We have had a last-minute family situation come up necessitating booking air travel on a very short fuse. The only remotely affordable ticket is on Spirit (I know, I know...) I'm trying to figure out how their insanely restrictive carry-on policy applies to medical supplies, as we're trying to minimize the quick-mounting tab of extras on this ticket. It looks like Spirit makes allowances for diaper bags. Has anyone flown Spirit with their CWD and know if Spirit charges for carrying on a D supply bag? I'm guessing the ADA says they can't, but I am also interested in hearing anyone's direct experience.