My kiddo was 6 when we went in 2016. he is on the spectrum and waiting is difficult for him. He LOVED the character meals - I think they were the highlight of his trip to be honest and I had two booked and added one more on the fly for a one week trip. We stood in line for Buzz and Woody and it was TORTUROUS for him... those lines are very slow moving and very boring with no real clue about how long it is going to take. Ride queues are far more interesting and fast moving with things to see... a 15 minute ride queue was very doable for him but the 15-20 minutes at Buzz and Woody was very difficult.
Also for a kid who doesn't like waiting in line, QS restaurants are not a whole lot of fun either. I am a single mother so it makes it even more difficult not having a second adult to help but basically when you are hungry and tired you stand in line to order your food, you stand in line to pick up your food and then you fight crowds to get condiments and find a table if you go during regular lunch hours. I found if you go during off hours the food is old and has sat around a while and doesn't turn over very quickly. I know people say TS meals take a long time but I never got out of a QS in much less than 45 minutes with all of the lines and waiting and was always hot and frazzled when I finally sat down to eat. I would rather spend an extra half hour at a TS meal ESPECIALLY if it also has characters. Any meal of the day, any day of the week.
For that reason we are doing the DxDDP and doing 2 sit down meals a day - usually a character breakfast and a nicer themed dinner - but we have a couple of early lunches (11:15-11:30 in there too when it worked with our schedule better. I asked my now 8 year old son what his favorite character meals are and he said, in this order: Garden Grill, Ohana breakfast, Tusker House. In 7 days we are doing 5 - his 3 favorites, plus Hollywood and Vine seasonal dine with F! package (a GREAT deal on the
DDP and you get the fab 5), which we have never done before, and Crystal Palace, which he also loves for Pooh (and I love pooh too... I admit that I am the driving force behind this one!)
My son is not a fan of face characters and ESPECIALLY not princesses, so that crosses Akershus, CRT and 1900 PF off of the list. I think you don't need to do both Chef Mickey's and H&V - we chose H&V because of the christmas costumes and added value of the F! package but also Chef Mickey's just seems more chaotic to me. I have Cape May on my backup plan (if I can't get the star wars fireworks dessert party on the night I want it I have to shift stuff around) and that is fine. he is too old to care for Disney Jr. and with the mediocre reviews at H&V the only reason I'd do it is for the F! seating and the holiday theming. I think that may be it for character meals around the world unless I am missing some.
I feel like 5 is the perfect amount. I have some variety in characters - stitch at Ohana, chip and dale at GG, pooh & friends at CP and mickey and friends at both TH and H&V... I didn't feel the need to add MORE mickey and friends to my plan. Also the family style meals are much easier than buffets. My kiddo is older now but we still both love just sitting down and being served, I think that is why Ohana and GG made his top 3.
As far as other fun themed restaurants on our list for our trip is: Sci Fi dine in (this is top on his list), Coral Reef, CA Grill (his favorite meal of our last trip, we go right at opening and enjoy a window view table and leave before fireworks craziness) and HDDR on our last night. Then there are some restaurants we are going to just for the food... we carefully looked through menus together and came up with a list. Sanaa (kid loves bread so the bread service is appealing), La Hacienda (kid's request), Yak & Yeti (mine, but with great theming though nothing particularly appealing to kids), Narcoossees (he loves the idea of eating in an octagon), Boma breakfast (kid's request, he went with his dad back in february and loved it), and Ohana dinner.