I have been to Tobita twice in the last month, so I'll give an overview of my experience.
The first time I went right around 1 pm and many shops were still closed. However, at least a dozen shops were open and I got a call out from the Mama-san at almost every shop. (For reference, I am a white guy who's around 30 years old but I wear Japanese fashions and have a very "anime'ish" hairstyle like many Japanese my age). I went for the the cutest girl I saw. The Mama-san was enthusiastically calling me over, but the girl seemed slightly nervous. The girl was less nervous when she heard me speak (I have very strong spoken Japanese). I went for the 30 minute course for 21,000 yen. Anyway, the girl was super cute with a small frame, smallish tits, and a very beautiful face. I found out she was 20 (she even showed me photos from her and her friends in kimonos for coming of age ceremony) and it was only her second day on the job and I was her first gaijin ever. Since she was new to all this, she didn't start with a BJ and wanted FS in missionary position only, but she was fine with DFK and titty licking. Given that it was missionary only, the FS was pretty good and afterward she really opened up and we had fun chatting in the few remaining minutes. I would like to visit her again sometime when she's more experienced. As a side note, someone mentioned that girls here might be coming from a lower economic class background than your average girl working at a regular health place. This might very well be the case, but this particular girl mentioned how she had been to Guam twice and Hawaii once with her family, so I would think she has a middle class background.
The second time I went around 5:30pm and most shops were open and there were many options. I think the call out rate I got was 80% or so, and some girls were very enthusiastic (blowing kisses, making hearts with their fingers, etc.) This time I went with a girl with both an super hot face and body. As the girls are all dolled up, maybe I just got really lucky, but this girl's face was as beautiful as Kira's (at Happy Berry in Kabukicho) and for me personally she had the best body out of any girl I have ever been with. Very toned and slim with C cups (American size), a great ass, and perfect skin. I again went for 30 minutes for 21,000 yen. She tells me she is 23 and just started a few weeks ago. Maybe she was just trying for repeat business, but she immediately said I was super kakkoii and why not just go nampa any girl I like in Shinsaibashi. I told her nampa is a pain cause I'm married, have a young kid, and am limited on time. (That said, I do nampa girls the rare times I have a full night out to myself.) We found out she has the same hometown (outside of Kansai) as my wife, and that really amused her. Anyway, we started with DFK then she went on to a CBJ and then onto FS cowgirl, doggy style, and finishing missionary. She was really into it and it was like a PSE. Definitely the best P4P experience I have ever had. I will try to find her again. Finally, she mentioned that she (and many other girls) like gaijin, but they get nervous if he doesn't speak any Japanese. So for those of you from out of town, perhaps even a few little Japanese phrases could help set the girls at ease.