Next to your motorhome.
Think this may be site dependent, and season dependent, so better asking the warder,
Sometimes they like awnings on the hard standing to protect the grass, sometime on the grass if you have a breathable groundsheet.
With the CC I think you will find that if on a hard standing then your 'pitch' is purely the actual hardstanding, you are not suppose to spill over into the grass. Always best to check as it us a hassle if you need to move things once pitched.