I think John worded it best.

The concluding weekend of the F16 event is a 100+ boat REM race weekend (2 days of racing) that is also an official F18 class regatta where every "who is who" will be present.

But otherwise you could also consider doing the Valk sailing thing. Those boat can also be your accomodation so those additional days can be quite inexpensive for you. The majority of Valk sailors sleep in their boats or in tents on shore next to the boats.

If you want a holliday full of different sailing experiences than this Zandvoort Event is truly it. Bouy racing in F16 event, Distance race and bouy racing in REM race event. Cruising and inexpensive pleasure sailing in the Valks.

And if so desired there is more available.

Wouter