As part of the #DeltaAmexPerks Shake-Over you and a guest can each enjoy one hot item (burger, chicken sandwich, flat-top dog), fries, and one cold item (shake, frozen custard, concrete or fountain drink) for free at Shake Shack — just by showing your Delta SkyMiles^® Credit Card.

But there is a catch.  There are only three Shake Shack locations participating in the promotion, and the hours are pretty limited:

• Wednesday, June 8th at Madison Square Park (11 a.m. – 2 p.m.)
• Thursday, June 9th at DUMBO (11 a.m. – 2 p.m.)
• Friday, June 10th at Midtown East (11 a.m. – 9 p.m.)

The second half of the promotion is a contest for SkyMiles members who are LEGAL RESIDENTS OF NY, NJ, CT & PA, 18 AND OLDER to post their most creative summer photo at Shake Shack on Instagram or Twitter using both #DeltaAmexPerks and #Contest . Three first prize winners winners will win 50,000 bonus miles for a getaway on Delta. Three second prize winners will win a certificate for a ‘Burger ‘n Brews’ party for up to 10 people at the Madison Square Park Shake Shack location.

You have to act fast to enter as the contest begins at 11:00 a.m. Eastern Time (“ETâ€) on Wednesday, June 8, 2016 and concludes at 11:59 p.m. ET on Sunday, June 12, 2016, and the full contest rules can be found here.

Bottom Line:

I love a good cross-promotion, and my last visit to Shake Shack just happened to be at JFK in April prior to a Delta flight.  I just wish that this promotion wasn’t quite so limited.