Another, not RAF “Shelter” is the Air Camper Park at Fairbanks International Airport.
It provides individual parking spaces for planes, each equipped with tent pad and fire pit. There’s a shower house with toilets and a shelter for groups.
Take a look at google earth. This was built by the airport management. Bikes are provided by local 99s.
This is way bigger than what most airports need, but offers some ideas for smaller setup. The “cutouts for parking, with tent pad and fire pit, set back in trees are a really nice touch.
And, if you have a float pond nearby, transient seaplane folks can use it as well.
MTV