Welcome to the Moms Panel Karen!
I am so sorry that you haven't been able to get Advanced Dining Reservations (ADRs) at Cinderella's Royal Table. They don't have waiting lists but don't give up! Keep checking with 407-WDW-DINE, even after you've arrived. You may get lucky and someone may cancel. Some guests start booking ADRs as soon as their 180 day window opens and may cancel as they get closer to their trip and start firming up their plans.
If your daughters really want to dine with Princesses, you could also try
Cinderella's Happily Ever After Dinner at 1900 Park Fare at Disney's Grand Floridian Resort. Also try
Akershus Royal Banquet Hall in the Norway Pavilion at Epcot.
You can also try walking up at any of the character dining locations and checking availability. Because you have little ones who may be disappointed if they don't get it, I'd send an adult ahead to scout it out. You may have better success if you check as breakfast, lunch or dinner is starting. That way you will have a larger time frame to try to get in.
If you are unable to get reservations, remind your kids that they can still meet the Princesses in the parks. Click
here for a list of suggestions.
Keep check on reservations & I'll keep my fingers crossed for you. Wishing you minnie magical memories :-) Allison