Sky! You are going to a book launch of YOUR OWN BOOK? (Yes, that is caps! SqueeeEEEE.) Congratulations.
What is the name of the book? Give details!
As for your signing them .. maybe you could get a stamp made of your signature, or a 'something' which indicates it is you -- like a sword. Then, it could be easy to put stamp to book and press down - voila - something that you have as your own signature or sigil. Or what about a stamp which does braille?
As for me, no, I've nev
... oh. I've not been to an official book signing but I've met
some authors who signed their books for me. Does that count? Probably not really, as there isn't the intense excitement of a gathering of folks and sheer energy of that book signing. (I've not even been to a HP 'first night' when a book was released.
I remember you showed me pictures of Garth Nix at that signing -- what a delightful person!