I have a ticket that was issued on AA ticket stock thru AA for an AS flight. I did not see a button on the AS website to upgrade to first class like I do for most my flights. I called MVPG helpdesk and the lady said that because its issued on AA cardstock I can only be added to the waitlist 2hrs prior to departure. Is there any way I can get on the list earlier, like checkin 24hrs in advance at the airport? The flight I am on should be a busy one and I want to be as far up on the list as possible.