Boxing fans hoping to attend the weigh-in for the welterweight showdown between Floyd Mayweather and Manny Pacquiao on May 2 must buy advance tickets . The vast numbers expected to attend the eve-of-fight ritual at the MGM Grand Garden Arena has prompted fight organisers to take the step of charging for entry to the event . Tickets will cost £6.60 and will go on sale through MGM Resorts call centre and box office on Friday at 8pm with all funds raised going to the charities chosen by Mayweather and Pacquiao - Susan G. Komen and the Cleveland Clinic Lou Ruvo Center for Brain Health . Floyd Maywetaher is looking to make it 49-0 with a win against the hard-hitting Filipino fighter . 'The weigh-in is always the grand finale of fight week activities , ' said Mayweather Promotions chief executive Leonard Ellerbe . 'And with the massive interest in this fight , the number of fans looking to attend the official weigh-in is going to be something we 've never seen before . 'We 're excited to be able to use the enthusiasm around this event to provide donations to two very deserving charities . ' Manny Pacquiao has wanted this fight for years and will be the toughest opponent that Mayweather has faced . A mere 500 tickets were made available to the public for the clash between the two best fighters of their generation . These sold out in minutes with resale prices on secondary seller StubHub ranging from £3,900 to £85,000 on Friday morning . Concerned by the prospect of mass attendance at the weigh-in by the hundreds of thousands of fans expected to descend on Las Vegas for fight weekend , organisers opted to charge for seats , which will be allocated . The American and his opponent are preparing for the biggest and lucrative fight in the sports history .
Thousands of fans expected to turn up to the MGM Arena in Las Vegas . To watch the weigh-in , spectators will need to purchase advance tickets . The tickets can be bought on Friday with all the money going to charity . READ : Mayweather vs Pacquiao tickets sell out within 60 seconds . READ : Mayweather vs Pacquiao purse could hit $ 300m .