If you go to Festival world tour option , you can do the mission with starpro and 80 energy which reward you d wristband. there is 5 region in the world for Festival world tour and you need every wristband for every place for each region to be blend or burn for the artist (you can see there is 4 artist for the FESTIVAL WORLD TOUR artist) . We just dont nothern europe region and currently we just start the southern europe region. It is very limited because the location has its time limit , so it is very wise if at least you get 1 wristband for each location .