Im going to be buying my first set of tickets to a comiccon and im just curious if anyone has some tips for securing the artist and writers signatures and maybe some remarques or sketches?

Sooooo, I'm thinking of entering Megacon Manchester's Cosplay Competition as an Adventurer this year in August and im thinking up some ideas for Performance, but im not fully sure of what to do. im trying to access the extended rule book, but it says it isnt working.

my idea is to bring my guitar to play/sing a song i really like, but im not sure if the guitar and singing part is allowed??

side note, i know its Guild of Nerds, and ive tried downloading the pdf of rules, but its not opening 😭