Restaurants and other eating and drinking establishments wherein food and drink are consumed within the principal building, provided that such use is located within an industrial park for which an approved overall development plan is of record. Such uses shall not be interpreted to include and are hereby defined to exclude drive-in restaurants or refreshment stands, commonly called "snack bars," "dairy bars," "hamburger stands" or "hot dog stands" or similar uses where customers and patrons are served food, soft drinks or ice cream primarily for their immediate consumption outside the confines of the building or structure in which the business is conducted;