Setting Custom Fields at Checkout
Our subscription site requires that users submit address information pre-checkout. In order to make the process a little easier on the users we wanted to pass information back into the checkout form (both the billing and shipping fields). We have the information both in the line-items and the order but are unable to adjust the form values in checkout via the hook_form_alter. Is it possible to change it via hook_commerce_checkout_pane_info_alter? If so how? It doesn't appear that there are callbacks for altering the form before presenting it.