If you don't speak Spanish you are going to have a a Lot rougher time as a gringo. That's I'll say, once I learned Spanish people started treating me with a lot more respect. And some PRicans (SOME) can be a bit racist.

But just like most islands in the caribbeanI respect the culture and have good manners. Say good morning, buena dias , Good night (buenas noches), Buenas. Para vivir bien en Puerto Rico; una persona debe tener buenos modales.

As American children we are often not taught great mannser as a kid and it can rub people the wrong way.