Authorities on Majorca are cracking down on pub crawls on the island after last week's incident in which an 18-year-old from Northern Ireland was seen performing sex acts on more than 20 men in public.
The incident, involving a teenager from County Armagh on a pub crawl in the popular resort of Magaluf, was filmed and the video has appeared on social media sites.
The mayor of Calvia, the region which includes Magaluf and five other resorts popular with Britons, said today he had passed a law "giving us tighter control over the operation of pub crawl organisers".
Manuel Onieva also said a police investigation had started into last week's incident, adding that he wished to "express my total rejection and anger at the activities which were carried out in a video which is currently on the social media circuit".
The pub crawl is believed to have been organised by Majorcan-based company Carnage Magalluf which describes itself on its website as the "leader in Magalluf party entertainment".
The company advertises a three-event package for £79.99 including "barcrawl, boat party and jungle sessions".
The bar crawl is a four-nights-a-week event which includes "four hours of unlimited drinking, four hours of unlimited free shots and a free Carnage vest/T-shirt".
Mr Onieva said today: "Companies operating pub crawls in Calvia now have to apply for a licence through the town hall. They have to prove their responsibility and show that they have the appropriate civil insurances in place.
"Each pub crawl guide will have to wear a specific jacket so local police can monitor those operating in the region and identify those that have been approved. Pub crawl groups can now not exceed more than 50 people and if any operators exceed this legal capacity, they will be fined."
It has been reported that the Magaluf pub crawls have around 200 British youngsters on them, including many who have just finished their A-levels.
The Calvia region, which also includes the resort of Palma Nova, is visited by between 1.6 million and 2 million visitors a year, of whom around one million are Britons.
British visits to the region are worth an estimated 800 million euros (about £640 million) a year to the local economy.