I spend 6 months in a 27 foot travel trailer. I am not far from my home, but I do the bulk of my sewing, knitting, stitching at the park. Since DH is a farmer and a volunteer firefighter, he doesn't want to be far from home. I love camping. So our compromise is putting a trailer at the local conservation authority park and we come and go.
I put my sewing machine under the bench seat, along with my travel iron and Ott light. My "tools" are in a caddy stored there as well. I cut out at home usually and kit up my projects.
I figure I can sew all summer and then quilt things up when I "move" back home for the winter.
I also sew garments, and cut them up at home as well. Then I just need one of those smaller reversible cuttingboard/pressing pads.
On nice days, I put a little table out on the deck and sew there....Get a lot of funny looks, but I don't much care.
Also take my laptop to play with EQ7 and my machine embroidery programme. It's not sewing, but it's related:)
Good luck and do have fun with your travels.