Thanks Raffles. Another useful lesson learned for me thanks to this brilliant forum.
I wonder....if my agreement on the phone is legal acceptance, does it follow that the conditions offered by the BA Holidays agent (I have her name) on the phone before I accepted (awarding of F Tier points and avios, access to Concorde dining facility on arrival) are also binding?
If so, I'll be ok to chalk it up to experience. If they deliver on tier points, avios, first-style arrivals and a pretty decent Air Belgium seat for the 7 hour overnighter, that's not too bad, even if more could have been got.
But I suspect it might not be so easy to get them to deliver on promises...eg tier points to be earned now showing as less in MMB.
Hmm, I just really want written confirmation of what they offered verbally as I accepted very explicitly on this basis.