2 hour delay
Cons: Having to board and put away carry on thinking the flight will depart soon and then finding out within 15 mins when everyone have boarded and settle that the maintenance delay requires that everyone must evacuate the plane with their carry on luggages. We waited at the gate for nearly 2 hours because the flight clerk told us not to roam far due to continuous updates... It started out as a 30 min delay and ended as a 2 hour delay with gate and plane changes. Had we known it was a 2 hr delay we would have been able to go use the restroom and go eat in between without worrying that the flight will depart.