Southwest Rapid Rewards A-List Membership
Once you qualify for Rapid Rewards’ A-List, you are entitled to reserved boarding privileges for 12 months, which means that Southwest Airlines will automatically reserve a boarding pass for you 36 hours prior to each of your confirmed Southwest Airlines flights to ensure you will receive the best available boarding pass prior to the start of regular checkin.
I fly southwest about once a month (which unfortunately is not enough to qualify), and getting onto the “A” boarding group is becoming a competitive sport.