First time doing MNSSHP I'm going to the 9/29 MNSSHP with my sister and our friend (we'll be Dipper, Mabel, and Soos from Gravity Falls) and it's the first for all of us. A few questions: 

1. When will costumed guests be allowed into Magic Kingdom? We saw something about 4 PM.

2. I think I saw something about Haunted Mansion being closed for refurbishment but I can't find anything about it now for some reason. Would it be open by then?

3. Where is the best place to watch the parade?

Thanks!