Camping, bivouacs and fires in Les Orres: what are the rules?

Because the mountain is a fragile environment and in order to preserve it, here is a reminder of the rules concerning camping, bivouacs and campfires in Les Orres:

• LAC SAINTE-MARGUERITE: camping and bivouacs are prohibited on Lac Sainte Marguerite (private land)
• GRAND VALLON: only bivouacs are permitted. Camping is prohibited.
• FIRES: all fires outside the designated fire pits are prohibited.
  

What's the difference between camping and bivouac?

• Camping: spending several nights in the same place
• Bivouac: a temporary, basic camp (under the stars, light tent) set up from sunset to sunrise.