I visited Ricoh Imaging Square Shinjuku yesterday.
In the gallery space, I joined a large crowd listening to a pro photographer Katsumi Maeno's talk about how he uses multi-exposure as a creative tool when shooting illuminations (1st attachment). I enjoyed the talk very much even though his photographic style is not really my cup of tea. He offered some practical advices e.g. "if you have to shoot with your non-WR lens in rain, put a towel on camera/lens and you'll be fine for a short while", "but don't retract your zoom when wet, wipe off dry first", and "make a halo around the illumination by breathing on your lens, but don't do that in the freezing temperature". His work as well as his students' were featured in the entire gallery (two separate rooms).
The audience was probably 60 years old on average. There seemed to be a sharp cut-off at around late 30s. Though there were younger people, they're more like an exception.
Most of current Pentax/Ricoh bodies and lenses are on display in another room. There are also a whole bunch of binoculars. You can try most of the bodies (K-S2 was just a plastic display so apparently you cannot). I've never seen 645Z before, and I was totally impressed by the big viewfinder. I was also surprised by how shallow the depth of field was using 55mm F2.8 lens. Most of the lenses are on the shelves with glass doors (not pictured, sorry) and you cannot touch them.
The entrance directly leads to the Theta room, I didn't have time to try everything but it's apparent this is as important for Ricoh as conventional cameras. One side of that room is a service counter, a few were sitting there waiting for their turn. If repair is needed they'll send the customer's camera to repair center, but it seems like they can check the camera and clean the sensor on the spot.
They sell some Pentax goods like calendar, mugs, T-shirts, towels and bags. They also have a tiny "outlet" room (last picture), selling lens hoods, straps, and some cases. There were some interesting Q cases on sale.
I'm actually visiting my parents in Japan, Ricoh Imaging Square Shinjuku is within an hour from their house door to door. I don't know why I've never been there before, it was definitely worth the trip.