Adding my just back thoughts...
Background: I'm local-ish: about 100 miles from WDW, so a 1.5-2 hour drive. I do day trips, overnights, and multi-day trips throughout the year. I kept my AP with the extended expiration and was planning a day or two to try it out with the lower crowds. When I was able to snag an incredibly discounted DVC Poly studio rental rate, I booked it a couple weeks out for Aug. 24-26 - M, T, W weekdays. With Hurricane Laura looming, I didn't make my final park day selections until the morning of the 24th. I made no dining reservations. My county has a mask ordinance in place, but I've been working form home, so until getting to WDW, I'd only ever worn a mask for the 30 minutes it took for me to get groceries once a week.
Comfort level - I went in with these personal rules:
No indoor dining
No indoor shows
No queues or rides longer than about 15 minutes
Generally keep indoor time to a minimum
No buses, no monorail
Take it easy, do what felt comfortable, leave any situation that didn't feel okay
How it went...
Resort (Poly Villas): Excellent!! With half the resort closed, it was very quiet, very relaxing, and VERY easy to socially distance.
Shops - I bought a mug and some milk - I was the only non-CM in each shop.
Food - I mobile ordered lunch two days from Capt Cooks, both times around 12pm. Each time, I ordered and immediately hit "I'm here", and each time my order was ready in about 5 minutes. It was waiting for me in a to-go container inside a brown bag. Condiments were packaged for grab & go.
Pools/Beach - I spent a couple hours at the Oasis pool, roughly from about 12-3pm Mon, and 10a-12p Tues. At its quietest, I was alone out there, and at its busiest there were two other families. PLENTY of room for everyone to stay far from each other. Volcano pool looked busier, but still had adequate room for all who were there. The beach was empty; I had the entire stretch to myself to watch the sun set for an hour. Music was playing everywhere. It was bliss!
Parks:
Monday 8/24, EP - around 4:30-8:30pm
I drove and was parked waaay far up in Journey - I don't think I've ever been that close! They did have parking attendant directing cars.
Took metal water bottle and umbrella out for security. No lines for security or entry.
Got food from a few booths - contactless payment via Disney Visa Rewards card at all but Italy, which required giving my card to a CM to swipe.
Only rode Nemo, which was a walk-on, and stopped inside to briefly watch dolphins and manatees.
Most rides showed a 5-min wait, but I wasn't there for rides.
Crowds were nonexistent; TONS of room for personal space. I spent my time snapping photos with no people in them, noticing details I haven't seen in ages, and sitting in various spots for a while, just enjoying the ambient music and lovely breeze.
While walking, I moved myself to give more space from others at times, but I'm comfortable with passing by someone for a second or two, so it was minimal.
Had no trouble at all finding spots in the shade to sit at a distance to eat or drink.
Mask compliance was just shy of 100% - I saw one nose-peeper and one person drinking maskless while walking. That was it.
Tuesday 8/25, MK - around 3-6:30pm
Walked to TTC and took ferry to MK - one of only 3 parties on the ferry and the only person on the top deck. Some benches had an end not marked "No Sitting", so I sat on one... and was told to get up because there's no sitting allowed anywhere on the ferry due to COVID. I don't follow the logic there, but I complied. Returning later, every bench had people sitting and nothing was said, so I don't know what that was about.
Walked on to: Buzz, Space, Under the Sea, Peter Pan, Haunted Mansion, and Treehouse. Splash and BTMRR were posted as 30-mins. Everything else was walk-on - I just wasn't interested in doing more. Mobile ordered from Pecos Bills and it was ready in 5 mins - I took it out to a table in the shade with nobody near me to eat.
MK felt a bit more people-y than EP, but there was still plenty of room to distance oneself. I did have to use a bit more effort to give myself space while moving around, but had no trouble finding spots to sit in the shade away from others to eat or drink.
Saw a couple nose-peepers, but far enough away to not matter and that was it.
ETA: the one place I wasn't comfortable was the Emporium on Main St. NOBODY was attempting to social distance in there! I grabbed the coupe things I wanted to buy, paid, and got out quickly.
Wednesday 8/26, AK - 10am-1pm
Drove myself.
Walked on Safari and EE. Strolled through Gorilla Falls and Maharajah Jungle. Heard a few gentle reminders from CMs on the trails for Guests to keep their distance when gathered to look at gorillas and tigers - Guests readily complied.
Ate at Yak & Yeti Local Foods - no mobile order there, so I placed my order the old fashioned way, but with plexiglass between me and the CM.
Very little crowdedness anywhere.
Saw more droopy masks here than the other parks - Heat Index was approaching 112, so maybe sweat makes some masks droop and hang? It didn't look comfy.
Overall takeaways:
It was one of the best visits I've had in 15+ years!! I came to love WDW back in the 90s, when low crowds, some things closed, not having fireworks or parades every day, no FastPass was the norm, and this felt very much like those days again. No backtracking or criss-crossing parks to do rides: I just circled through each park, stopping at things I wanted to do as I got to them.
Wearing a mask was a non-issue. I had a pile of Vera Bradley ones and Hanes - all cotton; I found the Vera ones a bit more comfortable in the worst of the heat, but both were soft, easy to breathe in, and did not bother my skin or ears at all. I changed to a fresh mask after eating, so I used 2-3 masks per day.
With no rain all three days, temps were HIGH: heat indexes well over 100. I'm acclimated to it, I drank plenty of fluids, stuck to the shade when I could, and used an umbrella when I couldn't.
I was amazed by how clean were the parks! Not just in terms of pandemic hygiene - but no overflowing trash cans, CMs constantly picking up litter. The standards WDW used to hold itself to all the time.
I found most CMs happy to chat and appreciative of some kind words. it was nice to see them looking relaxed and not stressed by the demands of trying to manage hoards of humans.
I felt very, very safe at WDW and will absolutely go back for more. I'm sure going on weekdays helped with that; I'm not sure I'm up to a weekend visit yet.