We havent been in years, the food wasnt that great but the worst was the lines and the crowded toppings bar and then trying to find a seat....prefer Peco Bills
I personally love Cosmic Ray's and we have gone at least once every trip, but it can get crowded depending on the time of day you go and finding an open seat can be brutal. If you are going to an early lunch to be finished before 12 in time for the parade then I think you should be fine,since I would think the high time for lunch would begin right around noon time.