I was there the first night of
MNSSHP in Sept. 2004 and we had a great time. Just about all kids are in costumes and maybe 1/3 of the adults dressed. If the weather is anything like the night we were there it will be very warm so make sure the kids are in light and airy type costumes. Make sure you see the parade and special shows and also be ready to get LOTS of candy. Oh yeah, the fireworks are amazing too.
(They give out trick or treat bags at the gate, so don't worry about having your own).