Final answer:
The question relates to the specifics of what guests must purchase with weeknight dinner specials, a detail often determined by a restaurant's promotional strategy. Common requirements may include a beverage, appetizer, or dessert.
Step-by-step explanation:
The question posed seems to be related to a business or promotional strategy pertaining to a restaurant or food service establishment. To accurately answer what every guest must purchase with any weeknight dinner specials, one would need specific information about the restaurant’s policies or the details of the promotion. However, common items that might be required as an additional purchase with dinner specials could include a beverage, an appetizer, or a dessert. It's a standard practice in the hospitality industry to pair certain mandatory items with specials to increase sales and provide guests with a complete dining experience.
Weeknight dinner specials are often designed to attract customers during slower business days, and the mandatory purchase requirement can vary significantly depending on the business model and marketing strategy of the establishment.