I placed a to-go order. I ordered at the cash register near the entrance and then waited at the food counter with my "table number". The employees were not unfriendly, but did their job without smiling or interacting with me There was no "Hello! Welcome to Johnny Rockets" or "How are you enjoying Kennywood?" or "Here's your food, I hope you enjoy it." The food came out quickly in about 5 minutes.
The $5.99 black-bean burger was the frozen kind you can get at the store for a buck. Bun and toppings were not distinguished, but it did the job as "amusement park food". The $4.39 side of fries was merely OK, with no taste, but a good portion size. I later doused it with salt and pepper. I downed the food with a $3.79 Pepsi which was half ice.