We went the 2nd and I'm hooked!
We got into the park around 5 (the Flag Retreat Ceremony was just starting) and people were flooding out. There were a decent number of people coming in, the turnstyles were steady but the lines weren't backing up - if that makes sense, LOL, if I explained that good enough. We made our way through the Emporium (had to pick up a postcard for autographs to mail home to some kids) and we had a 5:45 ADR at Crystal Palace. By the time we got out, we walked through Adventureland and by the time we got to Frontierland the announcement came on. There was hardly anyone in Frontierland. We done all those attractions the day before so we kept moving, and got to Fantasyland. Everything was a walk-on! I've never seen Peter Pan so empty that vacant ships were passing! The day before it was the longest line we saw all day at 30-40 minutes when we passed - and usually it's good for a 70 minute line. We did that, Dumbo, Snow White and Pooh within about 20 minutes. It was CRAZY. We got to Tomorrowland and mroe of the same. Space Mountain said 10 minutes but by the time we made the hike to the end of the line, our wait was about 2 minutes. Buzz was under 5 minutes. I noticed that most of the lines had overinflated times - and they were marked at 10 minutes, 15 minutes. Not bad at all!
We got a spot on Main Street with about 15-20 minutes to the fireworks and it didn't even start filling in til about 5 minutes before the fireworks, and when it did fill in there was still a TON of room - not like shoulder to shoulder during Wishes at certain times of the year. We liked our spot so well (and we'd accomplished so much in the park already, LOL) that we just hung out for the 2nd parade. After the fireworks people poured out of the parks. Judging by the crowds leaving, and what we saw on our last loop around the park after the parade - probably half the people left after those fireworks.