I'm surprised at the 'no charge for date changes' comments - I haven't flown xONEx for several years but before that was active for a decade or so, over which period the airlines (all?) went from smiling at the valued first-class passenger - all but having full bar service at the check-in counter - to considering us as leeches. Never a charge for a date change, but they all seemed to want around USD150 as a "standing in front of my counter" charge. At least once AA refused to sticker a paper coupon for a simple date change and charged for a 'ticket reissue' fee.