Theres lots of beach/anchor room on sandy neck out sied barnstable harbor, and on the Nantucket sound side lots of room at Saquatucket to park a short run to monomoy with rips and fish on the outside and beach on the inside. So many options what to do?, The beach scene is way better on Monomoy(you can land in certain areas) or Sandy neck than Chatham anyway lots of boats on the inside of Nauset Beach kinda like a parking lot, More food for thought. I'm easy I've seen them all, either one would hive a higher fun factor for anyone not familiar with the area with the threat of fog and crappy inlet, Low tide for the 15th, Chatham inside is 11:41am
http://www.boatma.com/tides/julcht06.html