I have the level 2 subscription (as well as TP and Kenny subs, and plenty of time spent on easyWDW and with their book). While I'm using TP to kind of gauge times, I don't want a strict schedule like that. I don't think, with a 4, 7, and 9yo it would go over that well. I like the was WDW Prep groups attractions when you're building your touring plans. They're broken out into like 4 groups: First Hour (or FP+), Second Hour (or FP+), Third Hour (or FP+), Anytime. To me, that's a good balance between no plan and an actual schedule. It also makes it a lot less daunting for a first timer who might not be real into number crunching and maximizing every minute. As noted in a previous post, having each step of your plan plotted on the map is nice too.
I also found the dining section helpful - you put in what restaurants you want to go to, and it builds a list showing you what order you should make your ADRs in (most difficult to easiest). I was able to get every single ADR I wanted at the times I wanted.
Finally, I subscribed because I feel like I've found a lot of good info on Shannon's site and podcasts. She has a good attitude and encourages people to reach out to her with questions. I like to support people and sites I like.