I'm looking at booking flights using American Airlines miles, but most of them seem to be on British Airways. I know you can't choose seats until 24h in advance on BA, but I wondered if there was anything else that could be a problem.
I assume if I booked a Business/First Award, I'd be in Club World and if I booked a First Award I'd be in First? Can you book a WT+ ticket with AA miles?
If flying out of LHR, are the taxes and fees the same if the flight is operated by BA as if it's operated by AA?