Marmotte Valais

I plan to sign up for this Marmotte Granfondo Valais, 133km 4700, Sat 31 Aug 2024.
It sucks that being Switzerland everything will be superexpensive. And it'll be a hassle to get there. Still good to do.
Would love to repeat the Maratona Dolomites but their date, 7th July 2024, does not fit well in my calendar.
Anyone here did the Marmotte Valais and can report?