Just returned from a quick trip, 12/12-12/15. This thread was immensely helpful! So I want to share my experience in case it helps someone else. Just me and DH.
Arrival day - Saturday, 12/12 - Flight landed at 9:10 am, made it to Pop via ME at about 10:15. Got the text that our room was ready the SECOND the bus pulled up. We did not rush to the parks and instead did mobile order for brunch at the resort, and walked around. Plenty of outdoor seating outside Classic Hall. This was the first time we've ever been to Pop so we enjoyed taking in the sights. The resort didn't feel crowded at all. Took the bus to MK around 4:30 - the MK buses were sitting there waiting every time we needed one. Plenty of plexiglass and the emergency exit on the roof was popped for extra ventilation. Rode Astro Orbiters first - the only ride where the actual wait was longer than posted. We waited about 55 minutes for what was posted at 35. After that, Space (40 min), Haunted Mansion (10 min), and Pirates (25 min). We left at about 8 for an 8:40 reservation at Cali Grill - amazing as always. We then took a Lyft back to Pop. Overall, we were pleased with crowds for a Saturday night when all parks were sold out.
Sunday, 12/13 - MK - We decided not to rope drop and rolled in about 9:30. Met local friends and stopped for a photo op at the Walt statue - almost no one there. Then rode Ariel and did lunch at Pecos Bill's...delicious, but crowded. Hopped in line for Pirates, Jingle Cruise, both about 30 minute waits. Stopped for a Dole Whip - this is when it started to feel pretty crowded. Social distancing was bad near the flying carpets. Made a stop at the baby center and then made our way to Carousel of Progress, surprised to find a 15-20 minute wait for that. After that, Small World - 25 min wait. There is a big covering over the facade right now, and same at the train station in front of the park. Finally, a minimal wait at Dumbo and friends departed about 5:30 pm. Mobile ordered the holiday spicy chicken sandwich at Cosmic Ray's - delicious. Then we made our way to Mine Train and waited only about 40 minutes. After that, waited about 20 minutes for Peter Pan and headed up front to queue into the Emporium. Only waited about 10 minutes, even though it wrapped around to Crystal Palace. Again, a bus was waiting with almost no one on it.
Monday, 12/14 - HS - By far our favorite day. Got on the app using Disney wifi around 6:55 and constantly refreshed from about 6:57 to 7:00 and scored BG 3 for Rise! I debated ridesharing to Speedway or Boardwalk, but I'm glad we didn't. Hopped on the Skyway about 7:45 even though I wanted to be there a bit earlier. Arrived at CB to find a decent line, but it moved quickly and we were lined up at HS just shortly after 8. They let us in at 8:15 and we walked onto MMRR, followed by Slinky Dog with maybe a 20 min wait. Then it was time for Rise and perusing shops in GE. Did a couple of other rides and then spent most of the afternoon at DS with super light crowds. Returned to HS at about 5 and rode everything in Toy Story Land as well as MMRR again, then headed to an Oga's reservation. I highly recommend a post-park close Oga's res if possible - we were not rushed at all contrary to some reports. Had 2 drinks each and loved the atmosphere! Then walked out to an empty park. Grabbed a cocktail at Petals and chilled by the Hippy Dippy pool, and mobile ordered a pizza for the room. Great ending to a great night!
Tuesday, 12/15 - Dropped bags off at 7:30 up front (no on-site airline check-in right now). Rope-dropped HS again with the same schedule as yesterday. Tried to rope drop ToT, but it was down
rode a few other things, but honestly felt we did everything we wanted to do Monday, so we headed for DS again and shopped and ate until it was time to get on the ME.
Overall: Precautions by Disney were great, but you can't control everyone all the time. A guy pulled down his mask and sneezed in the enclosed portion of Peter Pan queue - we were horrified. Still, for us, this was a much-needed change of scenery and the holiday decor at HS was outstanding. Also, the Skyliner is a GAME-CHANGER, especially during Covid. Having our own cabin every ride was amazing and relaxing.