That is nice of you. I would be there if I was not 3,000 miles away.
We have had a few detail days over the years, usually put on by a company rep who is there just to tell us how good X-brand products are. It is like an infomercial.
So last year I did something different. A 996 friend is the PCA concours chairman or something like that. He is a concours judge and puts on a class so that other potential judges can learn. I got an independent Porsche shop to let us use their facility and he showed us how to detail a car. He went through all the products, what he liked and why he did not like some, and showed us how they worked on the cars. Hands on rather than a guy from Meguiar's with a bunch of products sitting on a table
We also arranged to have ding and paint chip guys there. They were brothers. One does the dings and the other does the chips.