One of the sites I frequent is for Campzone in the Netherlands (Holland). This year, they have an 11-day event from July 23 to 2 August, and more uniquely, you are staying in tents and the sort.

It is right outside of Six Flags Holland. I am thinking about looking into this and having my wife and kids go to Six Flags while I game. However, I am not sure about the tent-life for my notebook.

In any case, if you are in Europe and interested in reading more (or outside Europe and just interested in reading about it), the link is as follows:

Campzone in the Netherlands - 23 Jul - 2 Aug