This is a fun experience (if you're new to ferry travel). It cut my travel time to Leesburg down significantly, and the time to get across is very quick. My only complaint, is that they should have an ATM on site for convenience (I was unaware that it was cash only, and the closest ATM was 9 miles back). But, once you know, it's not an issue.
Took the ferry on foot just for fun. Nice folks running it. Lots of well fed spiders. Didn't bother me as it added to the Halloween decor.