So I'm not likely to be able to use the outbound of an airmiles (yes airmiles) booking but I'd still like to take the return sector. Mrs Philco will fly both ways and is on the same booking. Will I be able to check in for the return? I remember something from the distant past when a counter agent at Horizon Air put an eronk (SP?) in the booking and made such a thing possible.

...if not, (as I suspect) out of interest would this be possible on a non-redemption booking?