My family (of 4) went for our first time in November, so we know a ) what it's like for the first time b ) what it's like for the first time w/ CV19! I've been waiting for someone, anyone, to ask "my" advice! ;-)
It may be a bit tougher on you going in July. IT. IS. HUMID. Soooooo humid. And bring ponchos!!! And wear Tevas or water Keens!
We originally had our trip planned for March 24-31. Whoops.
Anyhoo, we ended up with a 6 day park pass (was originally a park hopper plus, but no park-hopping or water parks while we were there.) Because we too, are DLR folks, we figured MK was close enough to our home park to only need a day there. I had been to Epcot when I was a kid and it just didn't seem to have enough to make it worth 2 days, so ended up getting park passes for DAK and DHS for 2 days, and only one day each for the other two. I only scheduled 2 days for DHS in order to ensure we got on RotR, and sure enough, we only got a boarding pass for one of the days.
When we went, we could only make dining reservations 60 days in advance. I'm assuming you're on the west coast - if so, I'm not kidding, you have to get up at 3:45 AM to be ready to make your reservations. I think they allow park-hopping now within limits, so you'll need to have at least a 80% idea of which park you might think you'll hop to, if any. (Personally, I don't think park-hopping is worth it at WDW, the place is so damn big, you'd waste precious time getting from one place to another!) Definitely have an idea of which restaurants you just HAVE to go to and make those first. I still didn't get my ideal time for Sci Fi Theatre, but thankfully, since we had 2 days in DHS, I got a second chance.
I'm assuming you have the My Disney Experience (MDE) downloaded on all mousketeers devices and linked up, right? Life-line to all things WDW.
Our arrival time in MCO ended up much earlier than anticipated, so we arrived at AoA without any dinner reservations. I checked MDE for any of the Disney Springs restaurants I'd heard about, but none were available. I asked the concierge for her advice. She said to actually CALL the restaurant (whaaa?) and BOOM, we got into Raglan Road, which I HIGHLY HIGHLY recommend!! BUT make sure you leave enough time to get there - we realized there was no way we were going to make it in the 1/2 hr we allowed ourselves, and had to re-call and re-schedule. They were awesome about it.
As of now, there still aren't any FPs, so rope drop is a must... in fact, while we were there, we got there at least 45 mins ahead of the posted opening each time, and the parks were ALREADY OPEN! It was so cool... got to ride all the E-tickets before official opening several days!
Have you checked out touringplans.com? Very cool site. You can get to the basic crowd calendar for free, but they also offer many other services and info for a small fee (think it's like $15 a year or something) and I think it's worth it (and I'm a cheapskate!) That is the best way to determine which parks to visit on which days. I used that site to determine our schedule. The great thing is that if something changes, (and you've subscribed) they'll email you, and you may have time to switch things around.
Are you staying on-site? If so, where?
I will "talk" your ears off if you want me to... but I'll end here for now. 
Oh wait... you must do Yak & Yeti.
Oh yeah, Flight of Passage rocks. As does Expedition Everest.
Oh yeah, and Jungle Navigation Co. LTD Skipper Canteen is super cool.
If you have any doubts about your constitution, do NOT do Mission Space Orange.
Ok one more thing - if you don't mind a late dinner, try to schedule your dinners as close to closing time as possible. That way, you're not spending ride-time in a restaurant. Our dinner at 50's Prime time was scheduled for 1/2 hr before closing, so we only lost 1/2 hr, and got to walk out through a very empty Buena Vista street!
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