Denny's Corporation generally operates on a first-come, first-served basis and does not take reservations at most locations. This policy allows guests to enjoy their meals without the need for planned reservations. However, some specific Denny's locations might have different practices due to local management decisions, especially in areas with high demand. It is advisable to check with your nearest Denny's location directly for their specific policies regarding reservations, as they may vary. Additionally, you can visit the official Denny's website for more information on the services offered at individual locations, including any options that may be available for larger groups or special events.