Terk 1 - based on our experience 9/11/09:
1) Yes, the crowds thinned out after hallowishes but MUCH more after the 2nd parade at 10:30. From 10:30-12:00 was the BEST time for rides! We did have to get off Splash Mtn & Big Thunder, but there really wasn't a line at all.
2) According to the party map, characters only stay out until 11:30. However, some of the characters (the ones that are unique and therefore tend to have lines all night) came out the last time at 11:30 and stayed until the line cleared.
3) I would think they come out after that performance, but I didn't personally witness it. It's called a mix and mingle - the mingle is part of the performance.
4) The parade route is the same. We watched it at the beginning, near Splash Mtn for the 2nd parade. I'd say the whole route was still filled in pretty well by onlookers. It's a GREAT parade. I'd have to say one of my faves.
5) We watched Hallowishes from right under tinkerbell's line (no tink in this version) and felt we had a great view. I think the end of main street by the hub would probably be the very best.
6) The buses will continue to run for all of the resorts until they get an all clear from the busses at the stops - in other words you won't be stranded.
7&8) I left the park at about 12:10 - after standing in line at the photopass place to get my free print from the free dining package. There were only a few people on main street doing shopping. The line at photo pass starting at about 11:45 was LONG! Definitely the longest one I waited in all night except for two rare character lines.
9)Didn't see any kiss goodnight- I was in the photopass line, though.
10) We saw lots of people that were adults w/o kids or by themselves whatever. Everyone is treated equally. No one was rushed through or passed over. It's Disney. They're always great about that stuff! (Besides, we're ALL really kids anyway, right?
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seadd67 - we saw LOTS of non-disney costumes - infact, more than disney ones. A sports costume would be perfectly appropriate!