Here’re some ideas:
The island has three big bars — The Pier, The Lighthouse and The Tiki Bar. In between, are several restaurants, a bit of shopping and very little parking.
For those tired of hanging out, fishing is very popular. There’s a boat ramp & fishing supplies under the bridge crossing the Patuxent River.
Bunky’s Charter Boats, which is also sort of a general store, can set you on a charter and sell you fishing supplies.
You can also rent bikes, kayaks and paddle boards there.
You’ll find a fleet of boats available for chartering.
On the mainland within a long walk or short bike ride, is the Calvert Marine Museum with a big outdoor concert venue that attracts well-know musicians during the summer.
The museum is worth a couple hours to see a screw-pile lighthouse as it was when the lighthouse keeper lived there, watermen boats and live otters.
You’ll also learn the history of the region. Historic boats/schooners offer pubic rides from the museum’s harbor through the river and into the Chesapeake Bay.
Chesapeake Bay Research Facility
The University of Maryland Chesapeake Biological Laboratory is at the far end of the island, but it’s a serious research facility.
The visitors’ center exhibit highlights the health of the Chesapeake Bay, ongoing research, and an oyster reef community aquarium.
The visitors’ center is closed Monday & Tuesday during the summer, only on the weekends during the Spring & Fall and closed during the Winter.