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.