Parents do get Southwest privileges and maybe a couple other random LCCs.. my retired parents use the southwest bennie regularly with ease…
as far as my wife and kids? DL and WN credit cards in combination with our miles from commerical deadheads racks up 100s of thousand of miles/points a year. Positive space booked tickets in our shorts and flip flops.. I would never subject the family to the stress of space available travel again!