Yes, they do get to go trick-or-treating at several different locations thru out MK. They can dress up but they don't have to. They have special Halloween parades and shows thru out the night and several other special activites (fireworks, etc.). All of the E-rides are open. This does require the special ticket for MNSSHP. We'll be there for Oct 18th. My 5 year old got his Peter Pan costume last night. My daughter is going as Wendy. They are so excited.