where there is a will there is a way, read about a gal who has log home in MT, in winter they go RVing to a dry camp way out in the desert, she takes her LONG ARM in a cargo trailer they tow behind there RV, she sets things up and does her long arming in the cargo trailer. I figure if she can do that then any of us can figure a way to take a FW or small machine, hand crank would be good for no elec camps. a folding table you could slip under the bed?
It is really hard for me to help you as I have to be in my nest to even teach, I always for get some thing if I teach away from home. Me I would probably set up a special set of things just for the camper, knowing me. Sewing machine, rottery cutter matt ruler, threads, needles iron ripper light nips, any thing I would need. But I am one of those who does not do any thing half way, I'm sorta all or nothing, have tried but I always go overboard, so not much help here, so sorry :-)