Hi Mirna!
Thanks for your question and for visiting the Disney Parks Moms Panel!
Disney Character Dining is one of the highlights of most families' trips to
Walt Disney World. Getting a personal greeting and a hug, an autograph and picture are fundamental parts of ANY character encounter, in my opinion.
So, yes, pictures and autographs (and hugs) are absolutely allowed at Disney Character Dining locations. That said,
PhotoPass photographers are not inside many of the restaurants to capture any of the memories inside while you're eating, so those particular moments will not be available for
Memory Maker. However, PhotoPass photographers ARE available at the entrance to a select few restaurants like the ones listed
here. So, I suggest having that camera or phone at the ready to capture the other moments inside the restaurant, too.
I hope this helps and I wish you a Magical trip!!
Chris