I have been following this thread and just flew on SWA R/T last week so I paid a bit more attention in the gate area! We purchased the tickets in April with EBCI for all three of us.
From Phil to Orlando we were A 31, 32 & 33 so I was at a good spot for people watching in the front of the line once we lined up.
Announcements I heard at the gate: Get a gate check ticket for w/c and stroller. Family boarding was available for children 4 and under and included immediate family only unless you had an A boarding pass, they also said this did NOT include grandparents, aunts, or newly made best friends. They also told every family who got a gate check when family boarding was.
For the first time ever I heard them announce that if your boarding passes were in different groups and you wanted to board together to do so with the Highest BP, the higher BP could not move up!
There were 2 wheel chair pre boards and a family of 4 and then they called A etc. They were denying boarding to folks who were boarding out of order, at least 3 groups of people who tried to board in A1-30 without the correct numbers.
Orlando to Phil we were A22,23,24 - lots of pre boarding and of course many families. The families started lining up before the aircraft was even on the ground. I heard the usual announcements including family boarding after A, 4 and under unless you have an A.
Boarding was pretty smooth but right in front of me was a Mom with an older teen (at least 15), the gate agent would not let the teen board with her as he had a B pass. The woman tried to argue but the agent stood firm and would not let him.
When I fly SWA I will continue to purchase EBCI for my party - I just add it to the cost of the fare when calculating and comparing prices.