Recently three of us were on a SW flight. For some bizarre reason we had booked it uder three different conf codes. All three of us did early bird. When we went to get our boarding passes, only 2 of us could and the third had a message that online check in was not available.
We ended up at the check in at the airport and they could not find the third ticket. It took them 20 minutes of typing and then just issued a new ticket. However when they gave out the boarding pass, they gave a "C" in the 30s.
A few more minutes of typing showed that that ticket should have had an "A" in the 20s. They were unable to print out the A, but the check in agent wrote a note to give to the gate agent at boarding and it worked fine,
Long story but here is the point. If we did not early bird, the third in our group would have been way at the back of the line as he could not have done the advance check in
We ended up at the check in at the airport and they could not find the third ticket. It took them 20 minutes of typing and then just issued a new ticket. However when they gave out the boarding pass, they gave a "C" in the 30s.
A few more minutes of typing showed that that ticket should have had an "A" in the 20s. They were unable to print out the A, but the check in agent wrote a note to give to the gate agent at boarding and it worked fine,
Long story but here is the point. If we did not early bird, the third in our group would have been way at the back of the line as he could not have done the advance check in