wrote:

I've never heard of anybody getting officially questioned about this,
anybody else?

I see two aspects to the questions; on the one hand, the
aspect already discussed in this thread of keeping the FAA
happy, and on the other hand, etiquette; I have been
a little peeved (once or twice :-) by passengers who
agree on sharing the cost of a flight, but don't quite
grasp that their SO or buddies should count as full shares
(but I digress)

--Sylvain