Hi, Erin!
What a great day you're planning for Magic Kingdom in August, Erin!
Any meal at
Cinderella's Royal Table will be delicious, so you really can't go wrong there. Keep in mind, though, that it may get hot in late August, so I suggest that you make an early morning appointment at
Bibbidi Bobbidi Boutique, then head straight to breakfast. Your little princess will be far more comfortable in her layers of royal gear in the cooler morning hours. Should she get too hot for her dress later in the day, have a change of clothes in your bag to make her more comfortable (although her 'do and makeup will look great all day!)
If you plan on swimming during the hottest afternoon hours, another option would be to swim at your resort in the afternoon, then shower and head to BBB at 4 or 5. You'll be in the air-conditioned boutique during the hottest hours, then head to CRT immediately afterward. By the time you've finished dinner, the heat will have begun to subside.
Either way, I'd head to BBB first, as your little princess will want to look her extra-special best when she meets the Disney Princesses at Cinderella Castle. Don't forget your camera...you're going to need it!
Send more questions as you think of them, Erin; we love to help!