Yeah! I've been to the place just this past weekend. They hold a yoyo club every Saturday there, with Yoshi Mikamoto. He told me about it, and they hold this on the first Sunday of March; every year. The time of the event will be around 11am,so you should get there early, because the parking can be tedious ;) The format is a little different from other contests, but the judging will be the same. It is categorized in beginner, intermediate, and advanced. I will be competing in the advanced division.
Any style, age and gender are permitted. The contest is free to get into, but be sure to have a song for your freestyle ready. The prizes are subjective to the event. Try not to take my word for it, I got all of this info from Yoshi himself; call them if you may. I also heard from Yoshi that even pros like Grant Johnson, Anthony Rojas, Tessa Picillo, and Paolo Bueno; have all competed at this event before. As a result I hope that you can make it, and have fun while being there. ;D 8)