Round robin format. 4 groups with 4 players in each group. Winners of the groups will go to semis. 
Touch tennis scored just like tennis. 15/0, 30/0, 40/0, game or deuce. There is no advantage. If a game goes to deuce, the winner of that point wins the game. It is like a sudden death.
Match format will be one set until 6 games. At 5 games all - tiebreak until 5. 
Final - regular touch tennis match format: The best of 3 sets are played until 4 games each set and tie-break until 7 is a decider.