Oh Lord, glad I don't drink, LOL
Sleeping bag is a good idea.
There are plenty of service stations that have washing/shaving facilities so should be ok on that score.
I think I'll just try it and take the experience. Better than not having tried at all.
If I get any decent photos I'll post a few!
My post sparked a really interesting thread, so thanks everyone!
p.s. It's on the cards I will be made redundant next year. At that point I aim to buy a small RV and hit the road and disappear into the sunset!