updated 06/15/2011 AT 12:00 PM ET
•originally published 06/15/2011 AT 2:45 PM ET
Before he weds Prince William’s cousin, Zara Phillips – and officially enters the royal fold – British rugby star Mike Tindall let loose with his mates in Miami.
Make that very loose.
England’s rugby team captain, who will marry Queen Elizabeth’s granddaughter on July 30 at the Palace of Holyroodhouse in Edinburgh, Scotland, brought nine pals (including future brother-in-law, Peter Phillips) to Miami Beach for a wild bachelor bash.
“The guys checked into the W and partied non-stop for three days,” a source tells PEOPLE. “Mike will be marrying into the Royal Family in less than two months but he is obviously getting everything out of his system now!”
On Friday, the guys “enjoyed an eight-hour drinking marathon” at the hotel pool, adds the source of Tindall, 32 (who, at one point, donned a purple hat and neon sunglasses).