Will the hotel break be cancelled if the plane is delayed?

No, when the plane is delayed until the airport is closed, the hotel will be arranged for passengers to rest, and they can travel by plane after the airport is opened the next day, which does not mean that the flight will be cancelled. Flight delay refers to the situation that the landing time (the actual arrival time of the flight) is later than the planned landing time (the time on the flight schedule) 15 minutes or more.