Here are a few events happening in Orlando for Halloween.
Starting with scary fun and frolics for older children and grown ups. Universal is holding it’s ‘Halloween Horror' nights for excitement, shock and horror. http://www.halloweenhorrornights.com/orlando/eventinfo.html
Or for a milder scare the Disney way, check out http://disneyworld.disney.go.com/wdwi/en_GB/parks/specialEvents?id=MickeysNotSoScaryHalloweenPartySpecialEventPage for spooky costumes, trick or treat, Mickey Mouse fun and fireworks.
SeaWorld also has seasonal events for all the family. http://www.seaworldspooktacular.com/swfspook.html
Green Meadows petting farm in Kissimmee has a special ‘fall’ theme, where children can pick their own pumpkin. http://www.greenmeadowsfarm.com/