Hotel room rates are difficult to determine as they are both qualifiable and quantifiable. Many factors are considered when setting rates, including competition, customer profiles, amenities, location, publicity efforts, and costs. Rates must be competitive with similar hotels while also accounting for customer paying capacity. Additional factors that influence rates are standards of service, room location, and individual hotel characteristics. Rates can be set using different structures and bases including check-in/check-out times, nights spent, meals included, and formulas related to costs and projected occupancy. A hotel's rate card publishes room prices under various categories and meal plans.