No reason at all, if you traveled to the southern tip of Baja California to bake in the sun, drink abunch, and get some much needed rest.
On the other hand, if you leave the hotel property to explore the local area and eat in restaurants frequented by locals, you'll be rewarded with a cultural experience and more interesting food that will make the trip even more enjoyable.
Cabo San Lucas has dozens of restaurants worth a visit. Mariscos Mazatlan (Narcisco Mendoza and 20 de Noviembre, 52-624-143-8565, firstname.lastname@example.org) is worthy of notice as much for the interior as the food.
For appetizers, you can't go wrong with seafood cocktails made with shrimp, octopus, oyster, or sea conch. Shrimp or fish ceviche, raw clams and oysters or avocados …