I don't know if any of you are near the San Fernando Valley of Los Angeles, but this weekend and next are a couple of Japanese cultural center events. Not sure what the schedule is for M.A. demos.
Here's a quote from the dailynews.com about the Sun Valley event.
Next weekend, 4th of July weekend, is the SF Valley Japanese American Community Center event. It's Saturday and Sunday, July 3 & 4. I didn't see much info on the event, but it's similar to Sun Valley. Here's a link to their site.Valley Japanese Community Center Summer Obon Festival
Saturday, June 26 5:00p to 10:00p
at Valley Japanese Community Center, Sun Valley, CA
Price: Free, open to the public
Phone: (818) 825-9583
Age Suitability: All Ages
Tags: dancing, free event, obon, japanese food, japanese festival
Valley Japanese Community Center hosts Annual Obon Festival on June 26 & 27, 2010 5PM-10PM at 8850 Lankershim Blvd, Sun Valley, CA. Delicious ethnic foods. Demonstrations of Judo, Karate, Kendo and Tea Ceremony will be held. Festival-type games, calligraphy/Sumi-E exhibits, LA Matsuri Taiko will give a special performance on Saturday.PMX Cosplay contest on Saturday.Bon Odori dances afterward. Admission is free to the public. Contact: Christine Inouye at 818.825.9583
I don't know about the rest of the country, but there are events like this throughout the Summer in Southern California at various community centers and churches/temples.
Nisei Week in August is a big one. It's actually not just a week. Here's a link if anyone is interested.