If you like Asa or Shin-Sen-Gumi, you ought to love this place. There isn't much in the way of toppings - a fairly generous portion of chashu, a piece of nori, some green onion, some beansprouts, that's it - but the quality of everything is really good. I don't know how the broth compares to the yatai in Japan that rameniac frequents, but it's definitely a few notches above the tonkotsu broths at Asa, SSG, Kyusyu Jangara in Tokyo, and possibly Ippudo NYC. It's very rich and opaque, with a bit of seabura (diced pork back fat) and chili powder to give it a little something extra.
I also tried some brown sugar sata andagi (Okinawan donuts), which reminded me a bit of hush puppies. They were good, but I didn't know what they were when I bought them, and the little sign (which had a lot of romaji on it) said "ham somethingorother," so I thought there might be ham inside it. I guess "ham" was either "han" or an inaccurate transliteration?
There's also a mackerel sushi stand, a pastry stand, and all kinds of southern Japanese groceries, including umi-budou (sea grapes).