OK so I'm being a bit of an anorak but sometimes it's kind of satisfying being able to confront the smugness of BA reservation agents safe in the knowledge that what they're telling you is bo**ocks.

If there's any point to this post at all, it's to suggest to newer RTW flyers to be questioning of what they're told when booking, as it ain't necessarily so...

I've booked a DONE4 including a couple of domestic legs in Chile and Peru (using LA and LP). When checking through the booking I saw that these legs had been booked in M class, because no J cabin is available on these routes.

I tried telling the res agent that where this happens, Y is the booking class to use. He wasn't having any of it and even went so far as to fax me pages from the very same OWE fare rules I was reading from [which - surprise, surprise - state that Y should be used where no F or J cabins are available, for A and D tickets respectively].

BA seemed really reluctant to refer it back to the fares department [matters to me as it affects status credit earn]. But what was particularly amusing was the insistence that I hadn't booked a OWE but a 'BA round-the-world' ticket.

There again, maybe they're only used to booking LHR-EDI tickets