Laura, I was about to suggest something similar. Since you're (reasonably) asking for an objective way to enforce the policy, something similar to the "Does your carry-on fit in this?" mechanism needs to be offered. Your idea of an airline seat in the boarding area sounds perfect... and much better than the idea that had popped into my head! (My idea was some sort of a gate the width of the airline seat that passengers had to walk through before the boarding ramp. If they couldn't fit through easily, they could be pulled aside, sold an extra ticket, and then sent around the gate onto the plane.)
Bravo to SWA for entering the world of blogging!
... View more