Most participants will stay at the on-site improvised campground (we are still negotiating with the city of Amsterdam, and also exploring alternative options). Do expect a good atmosphere on the camping field, but don't expect much luxury. At 150m distance from the field there are male and female group showers (i.e. non-private) and some toilets. There is also a canteen where you can sit dry and buy drinks and some snacks.
We will have a parking spot for camping cars right next to the field. Note that entrance to Sportpark Sloten is closed for cars after 11pm and before 7am.

If you like camping and want to extend your stay beyond the weekend, many campsites do not allow early booking for just one or two days, so you may want to either book for the whole mid-week or not book at all and rely on last-minute vacancies. In your holiday plans, take into account the leisure ride on July 20th to the Zaanse Schans.

If you require more comfort, there is one hotel that stands out in terms of nearness (3 km) and affordability (70 euro/night): Ibis budget Amsterdam airport (booking.com, hotel's own site). Also ecomomic but not so near is Fletcher hotel Spaarnwoude. For other hotels we refer to the usual hotel booking websites.

Camping Amsterdamse bos is about 9 kilometers away.
It has cottages in the range of 145-400 euro for the 3 nights 17-20 of August.

Kampeerbedrijf De Liede is 14 cycling kilometers away, and has three cottages for 4/5 people, € 85 per night. This may sell out soon, so act fast if you are interested in this.

Droompark Spaarnwoude is about 9 kilometers away, and not cheap with prices for 3 nights starting at €640.