We arrived at the park at 7:30 and quickly got through security and into the park. We were stopped on Hollywood Blvd and were behind probably 200 people. At about 7:45, made announcement that Woody’s backyard was the only thing open for EMH and that CMs would walk us back. Crowd had filled in behind us and there were a lot more people behind us than in front. Started walking soon after and were herded through the animation courtyard archway and we stopped along the fence by slinky in TSL. If heading to SDD, stay towards the right. We saw that first riders were off about 7:55. Line moved steadily and we got on SDD at 8:20. While walking up to SDD, TSM wait was only 5 minutes, but listed at 65 minutes when we walked by after getting off SDD. Aliens time in the app was 45 minutes at that time. Woodys lunchbox was open but not taking mobile orders. That line also moved quickly and both tarts were delicious. As we walked out of TSL, the line for SDD extended past One Mans Dream and almost to Ariel. App listed it at 110 minutes. Other rides at HS were open with very short waits and Star Tours for sure was a walk-on.
On a side note, right now the HS bus stop is quite far from the park entrance. While we saw plenty of buses running early enough, I would drive if you have the option for a shorter walk.
SDD is awesome and I definitely think EMH is worth it if you get there early enough. For comparison, the night before, we got in line at ~8:10 pm (listed 65 minutes, 8:30 park close) and waited ~50 minutes. Seeing it lit up at night is really cool too.