Guests will once again be able to enjoy dining inside Cinderella Castle for lunch or dinner when Cinderella's Royal Table reopens on September 24th. Guests will dine on a "regal banquet" with choices including roasted chicken, beef tenderloin, and the chef's fish of the day. Unfortunately, the restaurant will not feature a princess greeting at this time.
UPDATE 9/11/20: Due to the Disney Princesses not being available upon the initial reopening, the pricing has been reduced from $75 per adult to $62 per adult. For children ages 3-11, the pricing was reduced from $45 to $37. It's important to note that tax and gratuity are automatically added to the prices above and this is a prepaid meal; meaning, you're required to pay in full when booking your reservations.
Over at Hollywood Studios, Hollywood & Vine is adding a new seasonal dining event for the fall. Minnie's Halloween Dine begins September 25th with an adjusted character experience. As guests enjoy a monster feast served to their table, Minnie, Mickey and their friends will wave and pose for socially distanced pictures. Look for Halloween decor and music as well.
Reservations for both of these new experiences will open on September 11th.
Source: Disney Parks Blog