nitwit, don't believe everyone...they're playing on your fears. the shots are only for those that deal with harvesting tobacco. I seriously doubt you'll need it.
You do need a stamp if you don't want to pay out of county fees for the fairs, etc...
You do need to register if you want people to come to your house for halloween. You do not have to register if you just want to take your kid out to other peoples houses.(but please do not trick or treat at those that haven't registered. Reg is free and if people don't do it its ususally because they have something to hide).
You will not get in trouble for having an out of state lic.

You are way gullible if you fall for that one. But you will pay out of county fees like I said previously.