So, I boarded UA 620 ord-dca at 3:45 now it's 6:15 and we have not pushed back. First it was no copilot for the plane, then more confusion, then the discovery that the cockpit door could not lock, the the discovery that they needed to find the correct screws to fix the door. No effort has been made to feed or hydrate the passengers. Personally, I will not be able to pick up my kenneled dog. I'm sure others have their own inconveniences suffered. Is this as unacceptable as it's seems to me, sitting in my E- seat for 2.5 hours?