I've searched the forum for any previous entries on Nantucket and cannot turn up what I want, so I am posting this question. Is there anyone that has taken the Great Point Natural History Tour which includes a visit to Great Point lighthouse amongst what appears to be an interesting tour of that stretch of the island?

My wife and I are leaving in 15 days for Cape Cod area for a week, but only spending 1 day on Nantucket itself and really want to add this lighthouse to our growing list. This is our first visit to this area and have a wealth of info from previous visitors posted here and from the Links page, but any info would be great.