It's not just about drink though.I had passengers fighting shortly after landing in Amsterdam some time ago.
All the people involved were women;there was a racial element, fists flew and throats were grabbed.Yes Cabin Crew were assaulted and we did eventually persuade the AMS police to press charges.
All this was 'kicked off' by a twenty something home counties girl who was seemingly calm during the flight.
She was certainly on something....but it wasn't alcohol.
Binder