You can pitch your tent for a night or two in the countryside as long as you don’t disturb the landowner or damage the surrounding nature.
It is important that you find a site that is well away from houses and is not on farmland. Choose solid ground on which to pitch your tent and avoid land used for grazing or agricultural purposes.
Your Right of Public Access permits you to pitch two to three tents for a night or two. However, a large group of people with many tents could cause problems relating to both sanitation and damage to the ground. In such cases, the landowner's permission must be obtained first.
National parks and nature reserves have special rules that may restrict the Right of Public Access. Tents are generally not permitted except in designated camping sites. In certain areas tents are banned altogether.
Rules are generally posted in English on notice boards in the area. You can also direct any inquiries to the local municipality or county administrative board.
Most municipalities have regulations on camping. Pitching tents in locations such as parks or sports grounds may be forbidden. In general, camping that is permitted under the Right of Public Access is not restricted, but tents may be banned in outdoor recreation areas.
It is your responsibility to familiarise yourself with the local rules. The local municipality and the police can give you the information you require.