Final answer:
Yes, it is possible for a guest to have a Caesar salad instead of the side salad with their dinner special.
Step-by-step explanation:
Yes, it is possible for a guest to have a Caesar salad instead of the side salad with their dinner special. The procedure would be to inform the server or waitstaff of the choice to have the Caesar salad instead of the side salad. They can then communicate this to the kitchen and make the necessary changes to the order.