Flew to Vegas last Saturday. Elderly gentlemen and his adult son boarded 1st due to I assume health issues. The elderly man sat in the window seat on one side, the son aisle seat on other side. Each time they were asked, they were told the seat was taken.
I always buy EBCI for both my DH and I. And yes, we have gotten B with it. I fly Southwest because it is the only airline that flys out of my local airport.