I think in friendly (it was supposed to be as far as I was concerned) matches, yes, you shouldn't ask a member of the opposite team for club selection (loss of hole), but if someone does, then let it go, as you want every one to enjoy the round, and your course also if they haven't played it before.

I have nothing against distance measuring devices, if they give an accurate reading and are used properly and quickly. When used by incompetents, who can't hit anything like a consistent shot, and can't get a sensible reading from it, they shouldn't be used.

It has certainly put me off them (and also remote control trolleys).