그러니까 프로모 기간 동안 총 4 stay 하면 certificate 2장하고 + 총 10,000 마일 받는 거냐 물어봤더니 아래와 같이 답장 왔네요. 

제가 예전에 처음에 안내 받을 때 이해한 대로, Preference 를 어느 것으로 설정하는 거냐에 따라 프로모 한 가지만 해당되는 것 같습니다. 

Mega Bonus, Mega Miles 두 개다 어카운트에 걸려 있어도 결국 하나만 혜택받을 수 있네요. 

에혀... 선택해야만 한다면 전 AA 10,000 마일보다는 Certificate 2  (Cat 1-5) 장 쪽으로 갈랍니다. 

근데 미국에서 하시는 분들은 Mega miles 가 훨씬 좋겠죠. 

Depending on your earning preference, you are allowed to participate in only one at a time.  As of now, your preference is to earn American Airline miles therefore, you are now participating in The 2014 Spring Mega Miles promotion.  Once you complete the requirements of that promotion, you may change your earning preference to Marriott Rewards points and participate in The 2014 Mega Bonus Promotion.

Thank you for contacting Marriott Rewards regarding the 2014 Spring
>> MegaBonus Promotion.
>>
>> Our records show that your account is enrolled in the 2014 Spring
>> MegaBonus Promotion.  Earning dates begin February 1, 2014, and end April
>> 30, 2014.  You have been selected to receive an electronic free night
>> certificate, valid at hotel categories one through four, after every two
>> paid stays.  You can receive a maximum of two free night certificates.
>>
>> However, as you are a valued Gold Elite member, I would be happy to change
>> this bonus offer to receive an electronic free night certificate, valid at
>> hotel categories one through five, after every two paid stays.  You can
>> receive a maximum of two free night certificates.
>>
>> I have documented your account with this alternate offer; however, you
>> will not be able to view your progress online.  It will continue to track
>> the original one.  Approximately two weeks after the end of the promotion,
>> around May 15, 2014, I will manually credit the bonus to your account.
>>
>> Please be advised that any bonuses already credited to your account from
>> the original offer will be deleted or adjusted according to the new offer
>> requirements.
>>
>> Many of our promotions have a "stay" requirement.  This is defined in our
>> program information, as well as the terms and conditions of each promotion.
>>  A "hotel stay" or "stay" means all consecutive nights a Marriott Rewards
>> member registers and personally pays and stays at any participating hotel.
>>  For example, multiple consecutive nights stayed in one hotel is considered
>> one paid stay.
>>
>>
>> * Members earning frequent flyer miles for their stays are not eligible to
>> participate in this promotion.*
>> Elite nights that appear as non-stay nights in your account do not qualify
>> for this promotion.  Incidental credit, redemption stays and timeshare
>> owner stays during a designated owner week are not eligible for promotion
>> credit.  Also, stays in ExecuStay and Marriott Executive Apartment
>> properties are not eligible for promotion credit.
>>
>> We appreciate your continued loyalty as a Gold Elite member.
>>
>> Thank you for choosing Marriott.
>>
>> Sincerely,