It specifies that "harassment is any behaviour
that _intentionally_ annoys, threatens, or alarms another person" (their emphasis). Read in context, I think it makes it clear that just saying something someone doesn't like isn't harassment.
The code prohibits "Smoking any substance, including tobacco,
e-cigarettes, medicinal marijuana anywhere outside of your own home." Anywhere?? While you're driving to Minnesota to get to the con? (They do
have an email address for complaining about pre-con violations.) But
this is just a nitpick on phrasing. I'm sure they mean "anywhere the con
"Requesting autographs/photos outside of autograph sessions or programme
items without first requesting permission." You have to request
permission to request an autograph? Again, just bad wording; I take it
to mean people shouldn't badger pros for autographs.