If you know when you'll be there now is a good time to buy tickets.I would most definitely have them purchased by the end of Aug.
Childern under 3 get in for FREE!
Trick or Treating at DTD is only on Oct 30 and 31st 5-9pm.
Here's a link to all sorts of info about
MNSSHP.If you scroll down to the 3rd post it has all the info about DTD festivities.
http://disboards.com/showthread.php?t=809958