Advice from Tesco's travel insurance
"• Local Customs - check out local customs to help you avoid getting into trouble (such as the local alcohol laws). "
Why preach to the converted on this site, contact Tesco.
The Northern Ireland regional manager is Richard Baker and the commercial manager involved is Cliff Kells. Trying to explain why rowdyness (whether caused by drink or not) is unacceptable in the confines and safety environment of a passenger plane maybe difficult to those with retail background, but it's worth a go.