Hi Hangover,
what do you want to know? I have attended several Europeans with my HC 16 as well as two US Nationals.
So I think I can offer some help here.
All events are in general Bring Your Own Boat, however al leatst for the Gold Fleet you get factory supplied sails.Therefore the costs are significantly lower than attending Nationls in the US. Most of the people sleep in their RVs which you may rent in the area.
Details for the event will be sorted out in the next week as the EHCA (European Class Assn) will have their annual meeting in two weeks time.
For sure there will be a lot of parties. The rest will be on the website soon.
Don´t hesitate to ask any more questions.

Fritz
Germany