I don’t think they were necessarily Muslims. Just drunk Brits. The Brits are horrible when they travel, so drunk they can barely stand up and disruptive everywhere, not only in bars, but in their hotels and, obviously, on their flights.
I’ve seen that!
Several years ago my wife, daughter an I were at a resort hotel in the Bahamas. A UK tour group showed up at the same time we did and they were almost all Scots. (Note I didn’t ask. They were either Scots or the UK “League of Red-Headed Step Children”.) The other thing they could have been was the “Glasgow Society for Promoting Cirrhosis of the Liver & Skin Cancer”. Needless to say for the entire 10 days we were there Her Britannic Majesty’s Red Headed Subjects were passed out or nearly passed out everywhere, loud, commode hugging (or should have been!) drunk plus by the 4th day horribly sunburned. By the end of our stay I couldn’t see how some them weren’t just standing around and just screaming in pain all day long. I know why they were already in some sort of alcohol induced coma. It was a unique coma somehow it allowed them enough mobility to get to the bar and get more booze as well as wander aimlessly down to the beach for more sun.
They didn’t really bother us, it was just a unique unplanned by the hotel in the lobby & bar floor show. Living proof why “Mad Dogs and Englishmen Need to Stay Out of the Noon Day Sun”!
That apparently also applied to Scots!
It’s been a couple of years since I’ve traveled any great distance but your description of Brits fits the soccer hooligans is apt. Many of the Muslims seemed angry and resentful of the travel restrictions and security searches. They clearly didn’t want to sit next to a kafir.