Hi Margaret!
Both experiences are special and lots of fun!
Cinderella's Royal Table has a unique location, Cinderella Castle. There's nothing more magical than a Royal invitation to enter the castle, meet Cinderella, get great pictures, dining inside the Castle and meeting the other princesses. My experience there was a bit overwhelming, but my daughter enjoyed it a lot! The
Princess Storybook Dining at Akershus Royal Banquet Hall is also special with a medieval style atmosphere where you get to meet the Disney Princesses. This character dining experience was a bit smoother, but just as enjoyable and we have twice the amount of pictures with the princesses.
My kids still talk about the time we received a royal invitation from Cinderella to dine at her Castle, so I know that it made a big impression!
Hope this helps and have a magical, pixie dust filled vacation!