For the light switch project, I'd need to run forward in ceiling maybe 2-3 feet from light, and then 3-4 feet down an interior wall to switch location. Tub/shower is on other side of interior wall.
Based on feedback, I think I'll either add another outlet, or just relocate the GFCI outlet from its current location to desired location. It is located in front of sink on lower cabinet now- shouldn't be hard to run wiring around to behind sink inside cabinet and come up through hole in countertop to outlet. I'm thinking of using a surface mount outlet setup that would be mounted to wall but sitting right on countertop, so wiring would be sealed/hidden from view under counter. This would also eliminate any need to pull wiring through exterior wall.
I'll try and live with the WP switch situation. All my previous RVs have had switch in kitchen, so was just complaining based on previous experience.
Thanks!