[M_Six]

My biggest gripe with American is their crappy gate management. If your plane lands ahead of schedule, they're almost guaranteed to not have a gate available, so you sit in the plane on the tarmac and waste all the time you may have saved by arriving early.

Or if your plane is late, same thing. We once sat in the plane for 30 minutes waiting for a gate to open up and watched our connecting flight pull away and take off. We would have easily made that flight if they'd had a gate available or even let us deplane outside.