I'm not sure this equates to semi traffic down a narrow road with no turnaround. This is a fast food restaurant on the corner of 2 very busy roads that already has drive-throughs and 38 restaurants or cafe options within a 1/2 mile. The traffic isn't going to spike even 5%. It is likely the same people who are going to Subway, Wendy's, Kitchen 67, Firehouse, Qdoba, Pieology or Potbelly right now.
If designed right, the traffic would back up into the Celebration property and not onto the 2 main roads. I'm sure a design could be made to satisfy specific concerns. Could you have 2 or even 3 lanes to consolidate the traffic onto the property? What about something that doubles down on drive through like separate grill and sandwich stations for the drive through? If the board had come out with some specific numbers on how many chick-fil-a needed to handle in an hour, etc. then I would feel like they really were interested in working with Chick-Fil-A but their reaction didn't seem to be built on actual data.
Drive through accounts for 50-60% of CFA's revenue (for essentially the same footprint). It is like asking Starbucks to only sell coffee after 10 am. I'm not saying they wouldn't be successful with that model, and I have no idea if they would consider that option, but the drive through is a big part of their draw. The fact there is a long line of people who only want to get their food via a drive through says there is a strong demand for this type of service.
I live out by this intersection and have been frustrated by the lack of developments as promised by developers and now that a great company with products in demand want to invest there, they are shot down. Something doesn't add up.