Up very early to claim a spot at the flea market
To conquer a spot on the free market in Zoetermeer you have to get up early. It is not possible to reserve a place, so pack your car with stuff the night before and set the alarm clock on time. Some Zoetermeer residents are already at the Market at 5 a.m. to get the best place. Then you have already been warned.
Read here where the free market is in Zoetermeer.