Puerto Rico includes the popular cities of San Juan and Isabela. San Juan has a population of over 420,000 people and attractions like Conado Beach. Isabela has a population of around 41,000 people and features castles, homes, and beaches. Both cities have major cell phone providers like AT&T and Sprint. Puerto Rico celebrates many US holidays as well as Luis Muñoz Rivera's birthday on July 18th. The document provides details on hotels, restaurants, and travel costs in San Juan and Isabela.