Again not sad. My intricate planning (I'm OCD and Type A personality) actually allowed me to tailor this to perfection by redefining what perfection is for my family. Reducing rides and expectations is nothing bad. Going to WDW does not mean doing every ride, eating every kind of food imaginable and be out all day until the point of exhaustion. This makes sense for uber fans, but not for a lot of people.
I'm glad to read that, because after reading your posts on other threads and then previous ones on this one, I was concerned you were starting to self-sabotage a bit.
Personally, I very much enjoy our relaxed trips - but we mostly have those because we've done everything already. If I remember correctly, that's not the case for you guys.
So my only advice is: FP can be easily canceled, but hard to get. You might want to book a few extra while you can, and then decide on the day whether to use them or not. Think of them as a backup plan rather than an obligation.
That said, we very often book FP's on property in the morning, or the night before - including Haunted Mansion, Pirates, even Peter Pan. We know we're unlikely to get one for Mine Train, but it's not impossible.
If you're just walking around and you have one or two FP's, and then you guys decide you want to try something after seeing it in person, but it's a half hour wait - you might be able to just go on the app on your phone, and book that FP for a half hour to an hour from that moment. Then you avoid the line and can do something else for a bit.
Sometimes I'll change mine on the fly. I planned Peter Pan, but don't feel like walking all the way over from CoP, so I'll change it to a later Peter Pan or to something else. These are all viable options. Very easy to do on your phone.
But certain things like 7DMT, you will be unlikely to make that decision on the spot, so I'd try to book it in advance if you haven't already, and then cancel it or change it to something else if you don't want to use it. (Unless you already have a "no rollercoaster" policy or something.)
I'd hate to see you come back here, with no plans to go again anytime soon, and say you really wanted to try Frozen in Epcot, but it was a 45 minute wait and how ridiculous that is, when you could have booked a FP now, but probably not on the day of.
I'm all for winging it and do it more often than not, but booking a few things can be helpful.