Super Pulguero, Mayaguez
Super Pulguero is a very large flea market that has many permanent kiosks but also vendors who set up their own tents. There are coin-operated rides for the kids, and even a Thomas the Train ride that goes around the marketplace, so you can make it a family event. In the evenings they will often have live music. The hours are Friday and Saturday 10 a.m.–10 p.m. and Sunday 10 a.m.–8 p.m.