We had an awesome time tonight (7/28)! We arrived at 6:15, did some shopping, and saw the last Muppets Show at 6:45 (my favorite thing all night, never saw it before). We had FP+ for Splash, JC, and 7 Dwarfs. Before the official park close, we did those rides, plus Tiki, Pirates, Aladdin, saw some fireworks while on 7D, Winnie, and Barnstormer. We ate dinner at Pecos Bill around 7 PM, so that cost some time, but we still did 9 attractions before DAH. My strategy was to finish Adventure Land before DAH.
From 10-11 pm, we did Dumbo, Teacups, Winnie, Small World, and PP, plus a snack cart. No waits for the rides.
From 11-12, we did HM, BTMR x 2, Splash and 2 snack carts. No waits on rides.
From 12-1, we did Buzz, Astro Orbiter (my only mistake, it took 25 minutes), Space Mtn, and entered 7D at 12:57, and got off at 1:13.
It didn't feel empty, but not crowded either, as we walked on everything. The snack carts never ran out of stuff for us, and we never had to wait more than 5 minutes for snacks. Other than Astro, everything was a practical walk-on. It was an incredible value as we are only in Florida for 2 full days, and this was our only MK day. We did 22 attractions (13 during DAH), dinner, and 3 snacks in about 6.5 hours. My favorite day ever at MK!
I could not have done all this without info from this board (and easywdw), thanks everyone!