
Diamond
Two camp chairs, a small table and room to stand up without stepping in the dirt. It is a doorway and sitting square, not an awning floor. If you want to cover the full length of an awning on a caravan, you are looking at a long rectangular mat instead.
Some fine dust will, yes. The weave is designed to let sand and water fall through rather than pool on top, which is what keeps the grass underneath alive and the mat drying fast. What you do not get is a sealed floor, so it will not stop dust in a windy paddock.
No, it is the mat and a carry bag, so grab pegs to suit the eyelets. Sand pegs for the beach, standard steel for grass and hard sites. Peg the windward corners first, because an unpegged mat in a coastal breeze folds itself over the chairs.