But Do You Need a License to "Do Jedi Training" in Massachusetts?

From Craigslist:

I am having a Star Wars themed birthday party for my 8 year old and would like to hire Star Wars Characters to make an appearance at the party, or even better to do Jedi training with the kids. The party is in Wrentham on Monday June 29th from 4-6pm. Please contact me if you can help.

Thanks!