Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Workload; Communication Breakdown; Time Pressure
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors; Aircraft; Environment - Non Weather Related
We waited over 35 minutes for an aircraft swap due to a broken lavatory.  Once we got a new aircraft; the cabin was very hot.  We took several minutes to let the aircraft cool with the APU. My first flight with the FO. I had been off for two weeks (due to COVID); so I took some time to get all set up and start with solid Crew Briefings for FAs and FO. During pushback; FA called to say the banner on the aft door snap was broken. She told me that it was no big deal right now and I assumed I could look at it upon arrival into ZZZ1.  The aircraft was terminating in ZZZ1.  During the flight after thinking more about it; the item should have been resolved in ZZZ.  I believe the long delay for Maintenance (swapping aircraft) led to the push to get the aircraft to ZZZ1.  Upon arrival; after looking at the aft door; we noticed that the lower snap had been installed on the wrong side.  I called Maintenance Control and we coordinated Contract Maintenance with ZZZ1 Ground operations.
Air carrier Captain reported departing with an inoperative safety item that should have been inspected by maintenance prior to departure.