romcarlos is referring to his tickets on AAdvantage. mhtaipei and christep are referring to The Marco Polo Club. And someone else is referring to his OWE *OPEN* dated tickets. I'm referring entirely on award tickets issued by other partners other than Asiamiles.

You can change dates to your hearts' content with the MPC. With AAdvantage Paper tickets, you may change dates and as long as the paper ticket does not have a "Not Valid Before" and "Not Valid After" on the ticket, CX *might* accept the ticket without revalidation/reticketing. But I have known in one instance, CX at HKG refused to accept a passenger because the date booked is different that from the ticket. The passenger decided to standby for a flight on an earlier day in Business in the hopes that that day he could get on. CX insisted that he must get the ticket reissued with the correct dates before he could be let on.

CX's acceptance of tickets differs from each station. So you have been advised on this situation, that's all.

Now with e-ticketing on hand with AAdvantage awards, reservations simply cannot be changed through AA. The entire ticket has to be reissued before the ticket is valid again. With this, it makes me so much more difficult to just 'stand- by' at the airport for an earlier flight that you hope to get on.