There are few, simple rules to keep in mind:

1. Wait until play is finished before walking on the court,
2. Wait until the point is over, before walking behind players,
3. Ask for the ball, when it roll over to another court, instead of running over to get it.
4. Pick up your stuff! Empty ball cans and tops, water bottles, etc.
5. Clay courts: brush the courts when finished playing, clean the lines afterwards.
6. Don’t spill soft drinks  – it affects the surface.