My daughter is no longer a baby but we just flew SW a week ago and it was a great experience. They ask you not to line up in boarding groups like usual. They call the groups in 10’s. So A1-A10, then A11-A21 and so on. There was no crowding at all and everyone stayed seated until they were called.
They told us prior to boarding that all middle seats were to remain open unless you were a party traveling together. We knew this going on but it was nice to hear them announce it at the gate as well. This made it feel very spacious.
Onboard the plane was very clean. We got pre packages snacks and cups of water. I declined the snack since it was 7am but I think they were pretzels.
On arrival they ask you to deplane a few rows at a time to keep space. Again, everyone obliged. We’ve flown a lot during the pandemic and this was one of the best experiences.