A solution: It's NL and the everyone has a personal id. There is a national service to validate that, too. One week accepting of requests - a person can submi

A solution: It's NL and the everyone has a personal id. There is a national service to validate that, too. One week accepting of requests - a person can submit multiple id (incl. children). At the end of the period a random lottery with some bias to people registered in the city (in the end the event is paid by them)