I'm wondering if other FTers has been alone (or with partner) on a flight, except for crew?

I have had that experience twice, within two months, although it wasn't rev. flights.
I worked as a mechanic (for 2 months ) for a airline that operates various Dash 8 aircrafts, and were on two occasions away from base to fix/check aircraft before flying them home. One was abroad and the other domestic, on both return flights were there only the crew, a technician (or 2) and me aboard the plane.

Have other FTers been alone on a flight, rev or non-rev?

Sorry if this is the wrong sub-forum, or if this has been asked before