Had to add my 2 cents in here also. I too am very sad that Sudio M closed. We have been taking our annual family picture there for years now. This past trip we had a picture taken in MGM and another one in Epcot. Not the same but at least we got the family together for a picture. There are various options for family pictures. I really like to do this every year, it's my one big thing that I ask the kids (and they are not wee ones anymore!!) to do and they know that it's important to me. A good place is in Epcot in the Imagination pavillion. You can pick various backgrounds. We had one with the castle in the background and the year on it.
Have a Wonderful Trip!! And good luck with your photo!!!