You will have fun. Don’t bring anything that’s not healthy, Boon won’t work on it. Well, if you have a tree that’s unhealthy, and have no clue what to do to get it healthy, bring it, and Boon can tell you what you need to do to get it healthy. But he won’t style or wire it.
There’s several ways to learn stuff at an event like this: 1) bring your best stuff and be there and let Boon do most of the work while you observe, 2) bring stuff to get worked on, but when Boon’s workining with others, don’t work on your stuff, follow him around and watch and listen to what he does/says about others trees.
You didn’t say what kind of material you have, or what kind of work needs to be done, but I’ll tell you this: Boon works fast. Especially if the work is mostly pruning. He gets going, and Presto! Half your tree is in pieces on the floor! Lol! I suggest that if he’s going to do this with your tree, you give your phone to someone else to video it. You sit with him and listen as he says what he’s doing, but I promise you, it will happen so fast, your head will swim!
If he does any wiring, pay particular to the hand that’s NOT actually spinning the wire. What that hand does is most important.
When he’s working on a tree, notice the way he manipulates the branches and foliage. He’s firm, but very respectful of the tree. He will use tweezers to gently manipulate branches and foliage. He will reach in to the canopy with palms up.
If I can think of any more suggestions, I’ll post them here. You might want to post pics of what you plan to bring and I can advise you on them.