I busked in the early 80s all over the U.S. Not sure how the scene has changed since then, but I had a good time most of the time. Just watch out for kids (or maybe adults now!) who try to steal the coin from your case or hat or whatever you use.
One example is when I was on the Boston Common one day, two kids stood close to me and pretended to get into a little scuffle with each other. Sure enough, one pushed the other, and that one 'accidentally' fell in a way that he used his hand to catch his fall... in my guitar case. My foot immediately met his hand, and I told him to let go of the money or I'll put my full weight on. He let go, they ran off, I kept my coin.
But 90% of the time it's a cool gig when you find the right spot to play. It might take some trial & error, but once you find that spot, marry it. Oh, and be sure you have a permit to busk, if your local authorities require it.