I parked at the train station for about $4 a day during Halloween. I found a spot and had to pay every 24hours. Never moved my car though.
The parking garage is not associated with Hotel Salem (at least even we were there Aug 2018) the parking garage is a WAY better choice as it is closer and covered. The hotel lot is a good walk, tough to find and not nearly as secure
Yes
The parking garage near by does offer overnight and multiday parking passes.
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