Wrong date on Airport Transfer "coupon" - worth changing?

[Eskie_Lover]

I booked our vacation originally for 5 nights, then decided to add an extra night. We got our confirmation letter, and the "coupons" for our transportation to and from the airport this week (we are using the Disney shuttle bus service). Our arrival information is correct on the coupons, but they did not update our departure information for the shuttle.

Is it worth calling Disney to change it at this point, or can they just update it once we are there?