Beach Volleyball in Lausanne?

Hi all,

I’m visiting Lausanne for work for a week and was wondering where I can find competitive beach volleyball games to play. I saw that the closest court to me is Terrains de Beach Volley, but do they have any “open play” there?

If anyone can point me towards the right direction or have any info on how often competitive games happen there (or if they would even let a stranger play), that would be super helpful.

Thank you in advance!!