So, did you just copy and paste an old POPLA appeal for a different McDonalds (Leytonstone) and a different operator (MET) instead of Whitchurch and Premier Park? That's basically what they're saying in their response pack.
Anyway, you're appealing to the IAS which is an exercise in futility, even if they sound like they are panicking in their operator response with misleading terms such as "grace" period when it should be "consideration period".
Unless you can either show us that you put in your IAS appeal or tell us which points of your appeal that have not answered/rebutted and which parts of their operator evidence pack you can rebut, it really isn't going to matter.