what the hell?

from www.statuereservations.com/faqs.html

How early should I arrive for my tour? You should arrive at lease two hours prior to your timed tour. For example, if your reservation is for the 10:45-11:45 timed tour of the Promenade, it is recommended you arrive two hours prior in order to clear security screening and allow for departure and travel time from your embarkation point. Therefore, a visitor should arrive at 8:45. This will allow time for screening and boarding of either the 10:00 am or 10:30 am ferry departures from Battery Park. Please note that the security screening facilities at Battery Park NY and Liberty State Park NJ are scheduled to open 30 minutes before the first vessel departure of the day. Typically, there is a shorter wait time at Liberty State Park, NJ.
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and according to this FAQ, Bill's correct - pedestal only!

how pedestrian!!