"Pearl" is the official cashless currency of Tomorrowland. Pearls are the only way of payment for food and drinks at the Tomorrowland festival site. 

The exchange rate for Pearls is:   

€ 20 - 10,5 Pearls (P1.00 = €1,90)
€ 40 - 21 Pearls
€ 60 - 31,5 Pearls