My husband and I took the 90 minute 2:30PM afternoon harbor cruise. It far surpassed any expectations with an excellent guide who gave thorough explanations and fun anecdotes about everything we saw, from lighthouses to the site of JFK and Jackie Kennedy's wedding, to the huge multi-billionaire owned yachts in the harbor. Our cruise included a cool, refreshing drink served by one of the friendly staff members. The only thing to keep in mind was that the boat is fairly small and we were told that the restroom was to be used "for emergencies only." If you need to have a bathroom handy this may not be the best cruise, but we went before we left so we were OK. All in all, I would highly recommend this cruise.