We made the switch a while back, mainly from reading the Tour Guide Mike stuff back when it was going. I am not sure how to adjust now with FP+ in place (so some of this is projecting...), but here's how we adjusted. Note that we don't go as often as you seem to have gone, which probably changes our priorities a bit. Here is my advice/experience:
A) Most important: give up on the idea of doing everything. Just pick the few highlights that you care most about. And, just get used to the idea that there may be rides that you never see (we have several we've never been on). But, you will get to see the best things there. Think of it like Thanksgiving dinner (depending on how yours goes...) - you don't have to eat some of everything, you can instead just enjoy your favorite things.
B) We still do rope drop (not an early entry park, though). No matter how much we might not want to at the moment, we are always very glad later on. You can get more done in that first hour than in the whole afternoon. Go ahead and act commandoish for the first hour or two. But then, say "mission accomplished".
C) Figure out how you want to eat lunch. We sometimes get a good size snack midmorning and have a late lunch. Other times we have an early lunch. We rarely eat near noon, though.
D) For the rest of the morning, only do things with little/no wait (or an easy wait, like a show you can enter the theater early for and sit down to wait for), or that you have your fastpasses scheduled for.
E) Leave the park early in the afternoon. If you got a snack, you could have lunch outside the park or make lunch your last thing to do. If you have an earlier lunch, you can maybe do one or two things (preferably with FP+) right after. But, aim to be leaving early. Don't get tempted to "try one more thing" or anything similar.
F) Take the whole afternoon off. Rest. In your room, or at the pool (the pool's not always "relaxing" for us), or shopping (the opposite of relaxing for me, but I know it's great for some), or whatever. Nothing scheduled - just do what you feel like at the time, and assume you will get nothing "done." Just accept that. Think of your park touring as "done" at this point.
G) Have a nice dinner in the parks or at a resort and then return to the parks for the nighttime show (or maybe watch from outside a park - like fireworks from the Poly). If you can afford to, save a fastpass or two for your evening, instead of using them earlier). Don't try to do anything else, unless you won't be going to a park the next day and the lines are low (sometimes the lines will clear out late or something). The key here is to make this just a nice purely relaxing evening experience - enjoy the atmosphere, enjoy a ride or two with fastpass, watch the fireworks or whatever, but don't think of this as a time you really need to "do" anything.
H) Plan at least one day (2 if it's a longer trip) mid-trip that's a rest day. For our "rest day", we like Disneyquest (that's relaxing for us), but figure out what it is for you.
Anyway, that's what seems to work for us. We still see all the main things we want to. We don't get tired or worn out. We enjoy our morning (still see and do a lot in the parks), afternoon (relaxing) doing whatever, and evening (relaxing dinner, nice show, a good final ride). It used to work better with the old fastpass system (we could have a couple for nighttime, plus one or two in the early afternoon/late morning), but I think (hope) it'll still work with FP+...
. I cant control myself
. This coming trip I have most our park days being a half day instead of all day to try to cut down on the commando style . I do have a whole day at MK planned from rope drop to closing. But the day we are going to AK in the evening after 3:00 thanks to the late hours. Also doing HS in the evening during EMH, which I hope we wont be sorry because of crowds. Then we are going to Epcot at rope drop and then going to the resort after lunch at Via Napoli to swim and enjoy the resort. So I'm trying to tone it down a bit.
