Trugger,,,,We use a good quality shade cloth from bunnings......
A number of the parks don't like you using tarps if you are going to be there for a while.
The shade cloth is light to carry and folds up to nothing for transporting plus, when in place it breaths....water goes through it if you spill anything....and easy to sweep clean.
We also use it on the floor....then carry it on up the wall....cuts out wind, keeps pests out and give us abit more privacy,.
I'm not saying its any better than other products...but it suits us.