This may sound like heresy - but I'm thinking now of using the Amex voucher for the 1st trip, and using the one I get next year for the 2nd, to get to Oslo - after all - I want to travel Biz Class both times, & why pay £1200 for the privelidge, if cash is tight, but miles are not?!
Correction - just logged into BA.com to find they've deducted the miles for my honeymoon - more than a month after booking