Two days your group can shape together
Start with a sandcastle lesson because it gives everyone a shared project without deciding who is best at beach volleyball. Sandy Feet's current lesson information says tools and equipment are supplied, but its formats serve different group sizes and locations. Tell the instructor how many people are coming, ask for the meeting place and total quote, and save that confirmation in My Trip.
Day one: sandcastle, dinner and individual rides
Keep the afternoon free for showers, food and whatever the group wants to do separately. Gravity Park works as an evening suggestion because its official site lists a mix of go-karts, mini golf, thrill rides, a Ferris wheel, climbing and an arcade. You do not need to buy or ride the same things. Check the night's operating information and each attraction's requirements before going.
Day two: meet the boat you actually booked
A dolphin-watching tour is the second day's flexible stop. The Original Dolphin Watch is one current local operator departing from Sea Ranch Marina; other reviewed operators may use different docks. Book directly, then put the correct provider, marina, check-in time and cancellation terms into your saved plan. A suggested tour category is not a ticket and no wildlife sighting is guaranteed.
Leave a meal unscheduled so a late return or changed sailing does not unravel the day. Browse food and drink after you know which marina you will use.