IVAO Switzerland staff took the decision to participate in the Guest Controller Approval (GCA) program. Effective 1st of July 2010 the following lines were added to IVAO’s Rules and Regulations: 5.1.7 “Divisions may require members of foreign divisions to obtain a Guest Controller Approval before being allowed to log on FRA restricted positions. Divisions shall announce their participation and publish their requirements on the division’s website”. As of 1st of April 2014 this R&R also applies to Switzerland. We were facing a lot of ATC tourism in Switzerland preventing our own controllers from having fun and worse, offering bad ATC service. These are the main reasons why we now participate in this program.