Going to Halloween Disney Party on Sat 10/31 - What should I expect?

[CableKC]

Disney Family and I got tickets to the event and are going to the Halloween Party at DCA on Saturday 10/31. Is there anything we should expect?

What should I definitely "steer" the family towards so that I can make sure that we "do" something really Disney Halloween-y?

Anything that we shouldn't "do"?

This is the first time we specifically came to DL to go Trick or Treat-ing...and I want to make sure that we do all the cool things.

Any tips or suggestions on where to go and what to do?

Thanks in advance.