My confirmation page said:
1. To be eligible to get bonus points, you must be enrolled in the Membership Rewards FirstŪ program at the time of enrollment in these features. Only one bonus offer per Membership Rewards account is permitted, and bonus points will be credited to your account within 6-8 weeks after enrollment. Maximum 5,000 points per account. Bonus ID: 5670 or 5671. Terms and Conditions for the Membership Rewards FirstŪ program apply. Visit membershiprewards.com/terms or call 1-800-297-1300 for more information. Participating partners and available rewards are subject to change without notice. To get bonus points related to this offer you must enroll by December 31, 2011.