Last two trips we've done DDxP (after upgrading from free DP).
DD's were 4 and 6 the first time and 6 and 8 this last trip, last month.
Usually 2 TS a day and the third meal was covered by snack credits.
If you have brats, doing TS can be difficult. If you have well behaved children who don't always want to eat nasty nuggets every meal, it can be a wonderful thing.
We usually hit the parks from open to close, even last time when staying at CR made it easier to come back to the resort for awhile. Being able to sit down and rest, in air conditioning (and yes there are some CS locations with AC) is usually a welcomed break.
Our next trip will be in about 2 years and DD's will be pushing the age 10 limit. No way I'm buying a dining plan for them at that age. We'll do OOP and probably come out spending about the same as the last trip.
Hopefully snag a 35-40% room discount this time around instead of the dining.
Dining is a lot of food but by doing 2 TS a day (one of which is a 2 credit meal), you can make the most of each meal.