new york to london delta gift card promotion

get an American Express Gift Card valued at $100 for delta SkyMiles member when you fly round-trip between New York (JFK) and London-Heathrow (LHR) this summer on Delta or KLM nonstop flights in any paid fare class.
register at http://dmn.delta.com/ace_offers/londonsummer/ and then purchase a round-trip flight between now and September 1, 2011. Then, fly between now and September 15, 2011,

delta airlines operate three daily nonstop flights from the United States to London.
new or existing SkyMiles members must originate travel in North America and first register online by September 1, 2011. Promotion registration is required before taking qualified flights.

Bonus Offer: Purchase a round-trip ticket in any paid fare class (that earns mileage accrual) between June 15 and September 1, 2011, for travel on Delta marketed and operated or KLM marketed and Delta operated nonstop flights from New York (JFK) to London (LHR) between June 15 and September 15, 2011, and earn a one-time American Express® Gift Card valued at $100.00. Existing tickets booked and purchased prior to June 15, 2011, will not qualify for this promotional offer. Codeshare flights operated by carriers other than Delta and KLM are excluded from this offer.
Promotional Code: Please refer Delta customer service representatives to 97061636.

Miscellaneous: The American Express Gift Card will be fulfilled within 6 to 8 weeks following the end of the promotion (September 15, 2011). Promotional reward may be earned only once (one American Express $100.00 Gift Card per qualified and flown member).
Gift Card offer applies only to the traveling SkyMiles member.