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This looks like a marvelous job, David (may I call you David?

) but unfortunately it requires one to be 'friendly and approachable, able to maintain good humour when tired', and presumabley sober, so I don't think its really me

Also your post made me realise another 'I've never.....slept in a tent!
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it's a great job, albeit an unpaid one, but it does require those attributes...
you wouldn't need to sleep in a tent if you had a relative who owned a campervan ;-)
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Had a little giggle at this, David!
You do realise I live in a caravan full time?
So, technically I could roll up with all my worldly goods in tow, kids, dog, Sky dish, the lot? rotflmfaore