Hello Catharina,
Cinderella's Royal Table is a very popular dining location, but do keep trying. Often times reservations will open as guests' plans change. I was lucky enough recently to snag a last minute breakfast about 3 weeks prior to arrival, but it really comes down to lucky timing. You can check
online or by calling 407-WDW-DINE, 407-939-3463.
Here are my other ideas ... consider booking a dinner at
Cinderella's Happily Ever After Dinner at 1900 Park Fare in Disney's Grand Floridian Resort. This character dining experience allows you to typically visit with Cinderella, Prince Charming, Lady Tremaine, Drizella and Anastasia. The dining location is only a monorail away from the Magic Kingdom! I'd also check out availability for
Akershus Royal Banquet Hall in Epcot to enjoy Storybook Dining with Disney Princesses. Theme Park admission to Epcot is required. My kids love this meal and we've found Akershus to be a wonderful alternative when Cinderella's Royal Table is fully booked.
I hope my suggestions helped, Catharina, and I wish you a magical visit to Walt Disney World.
Best wishes,
Sherri