Hello Marissa!
First of all, experiencing Walt Disney World through the eyes of a child is truly MAGICAL!!!! I know your visits to Walt Disney World are even BETTER now!
It sounds like you are an expert yourself, since you have been many, many times to the most MAGICAL place on earth. Since crowds are based on time of year, weather, conventions, etc., it would be really hard to nail down a specific day that would be better than another. My recommendation to figure out the best day for your family to visit Chef Mickey's would be to play around with your upcoming vacation dates on the
Disney Dining Online Reservation System. That way you will be able to tell first-hand what day would be best for your family to experience the sights, sounds, and SMELLS of Chef Mickey's. It's really easy to use and allows you to try all different reservation times and dates at your pace.
If you have other questions, please let me know!
Have a MAGICAL day!
Wes