We got back Monday from 7 nights at the Poly and I just finished recovering from vacation so here's my two cents.
The Polynesian: it's still the greatest hotel on property IMO. Sure looking at Space Mountain and the Castle from our room was somewhat disappointing knowing there'd be no fireworks, but the view was still great. The pool is always great and this time was no different. The staff of this hotel were beyond amazing. My son was treated like family by so many CM at the Poly and it was absolutely magical.
MK: it was great to ride 7d, which is something pre Covid we never did being local AP who don't ride without fastpasses. However it kinda sucked to wait for Winnie the Poo and other rides that always had a fastpass, even on busy days. It's a trade off I guess, but seeing distancing markers way back in some lines was pretty ominous to me and has me worried that they plan on increasing capacity without bringing Fastpass back. Longest wait we did was Splash Mountain at 45 minutes. Also did Skipper Canteen fully expecting it to be heavy on Skipper kitsch, which we love, but light on food. We were pleasantly surprised by the food. It was tasty and adventurous. No night time in MK was a major bummer.
HS: was a park we used to never do, but my son is now 41 inches so we really enjoyed it. Maybe an unpopular opinion, but Mickey and Minnie is better than the Great Movie Ride. Got 9 and 21 in two days for ROTR. On the 21 day it was broken most of the day including 90 minutes that we waited in line after getting called, then taken to interrogation before being evacuated. Finally got to ride at 5pm. The ride is amazing. I don't even like Star Wars and I thought it was great. HS has come a long way from a few years ago.
Epcot: I know it's in bad shape, but it was one of our favorites. Tangerine Cafe was closed
and WS was quite weird without much international staff. Hacienda de San Angel had the best meal (and server, Gerry from Toluca) of the vacation with Pollo al Pastor. It was a transcendental meal. The longest and hottest line of vacation however was Frozen Ever After. The first 15 minutes are outside getting slammed by sun. Did it at rope drop the next time and rode 3x as a walk on. Mariachi Cobre miked up sounds better. I didn't think it was possible. They are, IMO the best musicians in all of WDW.
AK: by far the most disappointing park, which breaks my heart. There are 7 attractions not including Tough to be a Bug, which I only ever do when there are no Fastpasses left, not that I hate it, it's just old and boring and IMO a cautionary tale of using IP because it's dated with a movie that is not very timeless. FOP at 10 minutes was great and I got to see the standby queue for that and NRJ for the first time in my life.
Other observations: we had the most ridiculous encounter with a CM at world of Disney who made my 3 year old take a half step, literally a half step, like 3 inches, because he was not fully behind the plexiglass. He was wearing a mask and extremely excited because he was being rewarded with a toy for being so good about wearing a mask for the first half. He didn't understand her but I thought it was super petty and unnecessary especially the tone she used which sucked because he was getting rewarded for following rules that were hard for him at times. It was our only negative experience. It's funny too because we then went to the Sanuk store where one employee played with my son while the other leaned around the plexiglass because she said she feels like she can't hear behind it. I just laughed at how two different experiences happened back to back. We also got smoked by a rainstorm at AK, just a minute after I decided not to buy ponchos. We learned two things: 1. Social distancing happens much less in lines with little rain protection. 2. Soaking wet masks are suffocating, I'm asthmatic and it was brutal, fortunately we brought extra masks, but the time from the rain untill we got back to the stroller were awful. Also Kali got my mask wet too, which was confusing because Sea World makes you remove your mask for Infinity Falls, which is essentially the same ride system.
TL;DR Poly is great, everything else is cool, wet masks = suffocating