Puerto Rico has gone through some major changes since I lived there. In the parks, on the streets, in the clubs. In the old days, the people were warm, generous, welcoming, outgoing, and fun. I found lots of clicks, cool attitude, and cold shoulders. Well, it didn't used to be that way.
Many people are suspicious and wary about talking to strangers.
There is police presence on every corner to avoid potential problems. I talked to many people about the changes and the majority felt that PR had simply grown too quickly, getting overwhelmed in the process and has not had the resources or space to adapt. I still love this place, especially Old San Juan. I will return again. Be tolerant, gentle, well mannered, and friendly.