Just a couple of things to think about. A lot of public parks and shared green areas of apartment complexes are sprayed this time of year for weed control, pest control type things. Be really careful as they don't always mark the area properly so your snake could be exposed to some pretty awful chemicals. There is also of course the issue of escape in a public place to consider.
As far as taking the snakes out and freaking out the neighbours I'm very careful of that. I try to educate folks but I also respect that many people do not like snakes, will never like snakes or are outright fearful of them. Just because I love snakes doesn't mean I can shove my hobby in their faces and expect acceptance. I also try to remember that my actions in public with our snakes can affect every other snake owner in my county. If I mess up, folks get upset, call the law makers and bingo...new and yet more stupid snake laws.
I'm not being mean or trying to say never take your snake outside. What I am saying is do so very responsibly and consider whether taking the snake out in public is really for the snake's benefit or is it more about how much attention you are getting.