I've agreed with the general tone of this thread, that CO's inflight crews seem to offer better customer service than their PMUA counterparts. But I absolutely don't have the same opinion of airport staff. Mrs Seaflyguy was stuck in IAH with no seat on her reserved flight home (due to CO's fault) and when she walked up to a customer service desk to try to resolve things, the agent there had her feet up on the counter, was chewing gum, and basically was no help at all. When I was stuck in IAH (again, CO's fault) late in the evening and walked up to a customer service desk that was closing down, the agent practically yelled at me as I approached, "We're closed!" Not, "I'm sorry, we're closed," not, "I'm sorry, we're closed, but here's where you can get help," not, "We're closed, but is there something I can do for you before I go?"

I like CO's in-flight crews but I've been distinctly unimpressed with their airport staff at IAH.