Those airlines did the pay program in Spring time when loads and flights were still down. United’s max pay for a Covid shot was time limited, if you missed the deadline, you got less pay. Let’s not kid ourselves, they would not have pay protected a Christmas Eve and Christmas Day trip.

The guy gamed the system here, they knew what they were doing by taking the shot on day 4 of 4 off, with Christmas Eve and Christmas Day on reserve the next two days that now have to be removed.