Puerto Vallarta is a party town, where the discos open at 10 PM and stay open until 3 or 4 AM. A $12 cover charge is the norm (at least for men) in the popular discos, many of which are at hotels. Mexican fiestas are popular and can be lavish affairs with buffet dinners, folk dances, and even fireworks. Make reservations with the hotels that host them or with a travel agency.