How are you going to enjoy it? Probably a few costume parties, maybe one on my birthday which is three days beforehand. Halloween being on a Sunday could complicate matters but the week before there's usually Halloween events going on.
What are you going to dress up as? I have no idea yet. Something I can get fairly easily and quickly. Or I may reuse a cosplay outfit.
Are you gonna go out trick or treating? Most likely not. I don't really live in a residential area and trick-or treating in the dorms would just seem... odd.