I've vacationed in the U.P.. Believe me, there are no plugs anywhere. Might be one that handles the bug zapper out on the screened porch. Or the fish gutting house probably has one --could never figure that out. Push the guts aside and plug in the laptop, is my motto.
Then how is it I'm replying to your post? I'm up here right now, and I do indeed have a plug;)
Hope you enjoyed your vacation, and come back soon!