I was able to develop color negatives without running water or any way to heat the water. You could bring dry chemicals and mix them on site. That way you would not have to worry about the film getting scanned again when you leave. There may also be a place there that develops film.
would love to heart more about your colour developing!
A member here told of how he developed his film in snap lock bags, more to save developer, but it could be a good trick on the road, to save carrying trays. but thats another story.