Have dinner in a hacienda-style restaurant with regional Mexican cuisine. Every night from 7, you can enjoy one of several types of Mexican entertainment, from mariachi bands and marimba music to Jarocho-style dancing and a Huapango duet. The house specialty is the margarita shrimp, but everything on the menu is good. Try the signature margaritas. Daily for dinner only. Reservations required for dinner. Most major credit cards. Blvd. Kukulcan Km. 12, Loc. E-17 (in La Isla Shopping Village), Cancun. Phone 883-3222. http://www.lacasadelasmargaritas.com.