I own my own school and my family has owned an athletic facility for most of my life. Do not mess around with this stuff. It is serious and everyone who has ever been bitten by this has said "we have been doing it for ...years and nothing has happened yet.". Protect yourself and your participants.
Nero and Fury are correct.
Get waivers!!!!! Know your local laws and your responsibilities and be safe.
You can loose eyes, get serious soft tissue injuries, puncture wounds, abrasions, sprains, falls, concussions, broken bones, and anything else you can get while actively moving. If one kid gets a broken rib because he tripped over a root while dueling with an instructor, you are in jeopardy of being held responsible.
Every community has slightly different laws on such things. Find out what they are and comply with them.
If you are dueling and have zero experience, I hope you are using protective gear. If not, start. It only takes one accident to kill the entire endeavor. And it will be an accident that does it. Something you didn't plan for. Plan for everything. We have gear videos here that can give you that idea.
All of this...we agree this all of this.
To operate anything close to a club or otherwise with LED saber combat practice or even the choreography without all of the above is pretty much like running through highway traffic dodging cars...with your eyes closed.
You will knock a tooth out...$1000-$3000...smack an eyeball...$10,000-$30,000...how about just break a guy's finger?...no big deal right?...well he was walking through the park, he thought the sabers were cool, he just wanted to play with you guys...then you are up on charges for injuring a special needs person...seems extreme but what would your defense be?...do you think the jury will care that you did not intend to hurt him...but wait you did swing a near-unbreakable yard long stick at his person with the intent of making contact, sounds like assault...assault with a weapon...around here that gets you 9-99 years in prison.
I would quickly get your ducks in a row before something bad happens.