We chose the ferry cruise to Savannah from HHI because our resort concierge advised it. However, while the cruise ride itself was nice and relaxing, the ultimate reason we went was to explore Savannah for the day. The ferry is almost 2 hours coming and going. There are tables and chairs, snacks and drinks/spirits while on board to make for a comfortable ride. The crew was friendly and accommodating. The “4 hours” in Savannah include boarding on and off the ferry. So really your hours are cut down to maybe 3 usable hours. It was also suggested that we do the hop-on/hop-off tour bus (which we did), but we literally only had time to ride it around the city once ( without getting off), and grab a VERY rushed bite for lunch before reboarding the ferry. If I had it to do over again, I would definitely drive to Savannah and take my time. There was so much to see and do. Save the money for the ferry, for another water excursion instead.