Quick one here.
Straight from the Facebook page:
"An innovation in ketchup calls for a celebration. Between 2 and 4 pm local time, ketchup lovers who ask for Heinz Dip & Squeeze and the Free FryDay promotion at all Chick-fil-A restaurants will receive a FREE medium order of Chick-fil-A Waffle Potato Fries®, limit one per customer."
So, you actually have to ask for the dip & squeeze AND the free fry promotion. Not too hard for some free fries!