I've lived in Japan for 7 years now, but I'm not much of a street photographer. I can't just stick my camera in someone's face and take a photo - it's not in me. I mostly do landscapes, buildings, sunsets, etc. I stand out because I walk around with TLRs and lots of chrome-covered beauties from the past 🙂
I've never been hassled about taking pictures, buying a developing film has been fine, and buying used goods has been great. Film is still alive and well in Japan I would say.