Wait. Delta doesn't currently have any holiday pay!?

I agree. An easy compromise is to offer holiday/double pay. Also, another idea would be to offer paid time off (pto) like JetBlue. You can sell it back for 150% of current pay - not the pay when you accumulated it . The key would be a higher acrual rate than JB. accumulate 13-14 hours per month as a 1st year guy, and let is increase to 15-17 hours per month.