I change flights frequently, hopping on earlier or later flights.

The A-list is okay for early boarding, but I think I'll only be buying BS fares, because of WN reserving seats for these fares.

For example, I flew yesterday, changed my flight to go on an earlier flight, and was confirmed because I was on BS fare. If it was a regular B fare, there's no guarantee that the flight has any non BS seats and I could go stand by on it.

This flexibility alone is worth the premium, plus the early boarding, and the free drink.

BS is going to fly with me. ^