Sales of beer and other alcoholic drinks are prohibited within a 100-metre cordon around the ground - a recognition that sport and drink don't mix.
Thai Beverage, makers of Chang beer, sponsor Phuket FC. Club.
Manager Priyawit Acariyachai, US-educated son of resort owner and club chairman Pamuke Acariyachai, says he fears the sponsors will give up on the club because of the ban.
""I am very worried,'' he said. The club has had an astonishing streak with three wins in a row taking the team to second place on the Division One ladder.
An injection of new players, a good coach and young, vital management appear to have turned the corner for Phuket FC after two seasons struggling for promotion to Premier League.
Whether the drink ban will cost them fans is an issue for Khun Priyawit, who believes some Phuket FC supporters have already decided not to come to games because of the ban.
''Not only Thais but also fans from other parts of the world come to our games,'' Khun Priyawit said.
The new regulation banning alcohol in a 100-metre radius of the Surakul Stadium in Maeluan Road was adopted by the Phuket Provincial Administrative Organisation on March 26.
It affects not only the stadium but also a small shop nearby that fans have turned into a gathering place.
It's believed a series of ugly incidents at the stadium led first to a ban on the sale of bottles, and now a ban on beer in plastic cups. However, it has been some time since the last incident.
Talks are planned between Phuket FC and the administrative organisation to try to have the ban reversed.
It's unlikely that genuine fans - especially families - will stop attending games just because they cannot get a drink. Phuket's weekend 3-1 victory over Bangkok FC attracted about 3000 people.