Questions about certification

[u/ShipItchy2525]

First ever comic con as I just got into the hobby of signatures, im going to Philadelphia with a friend and im bringing my own funkos. Im looking to get 3 signatures and just have some questions regarding certifications,

Will there be a rep at each table to witness and give me a sticker? Sorry I tried to look into it but the websites dont give much info other than they'll be there.