I love the half day touring style. I also love the relaxed schedule where most days are unplanned but you have a general idea of how many days you want to hit the parks, just not really trying to predict when or where you will be.. I would make 1 recommendation that you decide how important night entertainment is as weather could impact your ability to enjoy or even see it if it gets canceled. Doing evenings later in the week you don't really have a second chance to get back to the park to see them if that does happen.
How I generally do it:
- when we can hop: first couple days is concentrating on the "don't want to miss" things. so we'll do half days but just a focus on things we don't want to leave without doing, maybe some other stuff and then switch parks and do it again for that park.
- The rest of the week is largely unplanned although we do always have some fastpasses for somewhere, just not much care in what park as we don't decide that until we wake up and often change it when we see the bus lines for which park is not getting many people heading to it.
- the park we hit, if we even hit a park is largely what we're in the mood for and if we can hop, we'll leave a park if we get there and it's not doing it for us. we don't try to force the vacation to happen and go with how we feel. We generally miss most of our adrs and cancel most of our fastpasses as the week goes on.
Another tip, hold back a few days of tickets. It's pretty cheap and fast to add on days while you are there (with a package, you can do it at the resort. room only or offsite just stop by tickets or guest relations.). We've found a lot of savings doing this because you can't get a refund for unused days but we've never needed a ticket for every day and if your in a group that might do different things, you'll find a couple people in the group might need 1 or 2 more days than everyone else. fastpass+ really messes with this sometimes but you have a rough idea how much they matter to you already. Holding back also makes it easier to decide that your going off property a couple days if the mood hits you.