Authentic Reggae Party. Rootz Island will be organising 'JAM ROCK - Beach Party ' on Saturday, 9th July in Sliema, Malta. There will be. Authentic Reggae Party. Rootz Island will be organising 'JAM ROCK - Beach Party ' on Saturday, 9th July in Sliema, Malta. There will be. The one and only beach party on the island.. all inclusive day.. open bar open food.. jet ski.. water sports.. dj.