I usually go to this expo grounds for a motorcycle swap meet held various times throughout the year. If the subject matter of the expo is of interest to you, then do go. Admission fee usually applies. Paid parking is ONLY on site, without big risk of leaving your car on the street, and single file exit at the end can take an hour. You will walk miles, so dress comfortably and in layers. Backpacks are useful. Food is available, but look closely before just standing in any line, as quality varies a great deal. Have fun!