This is a chance for all you guests to express their wishes and blessings to you on this Wedding Day. Their message is a way for them to honor you. The Guest Books is not the same as the Photo Album but it will hold some pictures. Most Guestbooks allow for up to 300 names and addresses of your guest. Name written in the Wedding Memory Books can be used for all your Thank You Cards. Once upon a time, a wedding guest book helped a newly married couple remember who came to their wedding, organize thank-you notes, and start a formal address book.