From a posting on the Starwood board, it was mentioned that the use of AMEX was NOT necessarily etched in stone:
In addition, if a Starwood Preferred Guest member does not have an American Express Card, we will recommend they apply for one at 1-800-THE CARD. Otherwise, we will continue to, as in the previous promotion, take another credit card for your reservation and honor the Free Weekends Promotion.
Regards,
Starwood Preferred Guest Customer Service
e-mail: mailto:[email protected][email protected]</A>
Since Starwood doesn't offer double dipping, my guess is that you would have to provide your C+ card to get your 2,500 C+ points and sacrifice your Starpoints per $ spent, but not your # of stays count for the Free Fridays promo. Whew!
[This message has been edited by flyme2 (edited 05-09-2000).]