When I was in Hue, Vietnam I took one of those tours to see the Imperial Tombs. We were on a boat that looked a lot like this.
http://vietnamboats.org/Photos2/wenTAC1006.jpg
When we came back from visiting the first tomb, lunch was served on the boat, having been prepared and cooked on a little gas burner in the back where the owners lived. When we got back from the 2nd tomb, the wife was washing the dishes in the river where the kids were playing, and people were doing laundry.
I figure if I survived that, a little dinge isn't gonna hurt me.
You gotta give your immune system a workout once in a while