The sailing adventure in question is staying in the sailboat out on the water at night, so I don't think that really counts towards 9a. I wasn't sure about 9b because that seems to be about canoeing or kayaking as opposed to sailing.
Does Sea Base's Sailing Adventure qualify as a non-motorized trip on the water of at least 4 hours or 5 miles? I know they do a lot of motoring around, but does the time under sail qualify for this requirement?