Maybe my experience is non-representative, but in past 10 years or so I've never had a ticketing problem with AA that wasn't ultimately resolved favorably. Forewarned is forearmed: you must be prepared to have to call several times, in search of the most experienced, helpful agent.

As noted in the sticky above, the RTW desk in the US is: 1-800-247-3247


Let us know how you make out.