There must be a submission guide somewhere, maybe on the printable entry from. Most of the time art shows will accept matted or mounted photo booth rental boston
but do not want frames and glass, ignoring their guidelines could disqualify your entry. And without more info on the types of categories...just the obvious do not enter landscape photos in the pet’s category. A link to the website would have been so useful. BTW read the fine print some contests want you to surrender all rights to every image you submit, win or lose, that's why I stopped entering contests.