Danielle,
That is a challenging question!
Like you, we love to get in to the Magic Kingdom early at least once per trip to get that keepsake photo. A crowd free photo is a nice memento.
But we are not necessarily huge
Crystal Palace fans. The food is fine, but my girls are not real Winnie the Pooh fans anymore. The real question is would a table service meal been in your day's schedule?
BOTTOM LINE: After consulting with my boss (r.e. wife), we would say
no. There are plenty of places where you can get your picture taken where people in the background are minimized, so you should be able to still get that great photo without having to pay $25 a person. Try getting photos on the bridge from the central hub to Tomorrowland, or just outside of Crystal Palace.
Have a magical (and delicious) vacation!