the '*' for Camp-or-Treat' mentions about site sign ups at the Bike Barn. I think that would probably make candy handout approved by Disney if it's like previous years. In previous years I dropped by the Bike Barn and got our site on an 'official' trick-ot-treat list for The Fort, which they handed out to guests on the the 31st.
I'm thinking they they just don't want sites that didn't register handing out candy on the 31st from a liability standpoint.