[HKfreak]

My understanding is that you cannot carry concealed on your CCW inside a commercial establishment that sells/serves alcohol. At your buddy's backyard BBq I would say no prob.

Ditto. Nothing illegal about it because it is private property. Now if the property owner asked you not to and you still did, then he could probably have you arrested for trespass just like business' that have "no firearms" postings can do.

You can also go here and ask the AZ guys:http://www.arizonashooting.com