Hi there Natalie,
How exciting to be taking your grandson on his first Walt Disney World vacation!
Character Dining is such a great way to meet several Disney Characters while enjoying a delicious meal.
As a mom of three boys myself, I recommend
Chef Mickey's featuring the "Fab 5" at Disney's Contemporary Resort,
Tusker House Restaurant at Disney's Animal Kingdom Park and
Best Friends Breakfast featuring Lilo & Stitch at 'Ohana, which is located in Disney's Polynesian Village Resort. You are very wise to book your Advanced Dining Reservations 180 days in advance since many of the Character Dining experiences fill up very quickly.
I hope this information has been helpful to you. If you have any other questions or would like additional dining recommendations, please don't hesitate to visit us again. I hope your grandson has a magical first trip, Natalie!
Happy Planning,
Jodie