A screening-booking app could show the event, available seating areas and any reservation package. A place at a screen, a table and general venue admission may be different things and should be described clearly.
The pub needs control over capacity, deposits and arrival deadlines. Schedule changes can affect bookings, so staff require a way to review and notify customers. Any rights or permissions to show an event remain the venue's responsibility.
Start with a small programme and test two screenings overlapping, a changed start time and a no-show. Confirmations should explain what is reserved and for how long. The app can organise demand without implying that a booking includes every food, drink or viewing entitlement unless explicitly stated.
Related reading: Restaurant and Catering Software Solutions.