I had a friend that took out a small table in the 5th wheel-table by the chair. She installed a sewing machine in its own table. Maybe from the 60's. Not a large table. Later they took out the dining table and installed her Arrow sewing table.
I use my machine which stores in the clothes closet to sew on the dining table & on the picnic table outside. I go camping once a month and then on trips. I take items already cut, but If I need to I can use my mat & cutter at the kitchen counter. I have my machine in a rolling tote and have an ott light bag with light and sewing. I always have hand stitching (cathedral window) and loom knitting to make hats & prayer shawls. I hit the stores in the area and shop for sewing items I might not find at home. The truck that pulls the 5th wheel may have storage behind the seat, also.