Abacoa Golf Club, Golf Club of Jupiter, North Palm Beach Country Club are great public golf course options. Palm Beach Par-3 Golf Course is fun as well with great views, but a bit farther away.
Plenty of public beach options in Jupiter - See link above.
Swimming, snorkeling, paddleboarding, beach, grilling, kayaking, fishing and scenic walks. Can rent equipment at nearby stores as needed.
Restaurants (including Tiger Woods' restaurant The Woods), Shopping, Entertainment, Boating.
Florida cruises and activities
Unlike Massachusetts, Florida has a fantastic happy hour scene. Check out Tiki 52, Blue Pointe Bar, Dive Bar, Lynora's, or Charlie & Joe's at Love Street. Michael Jordan also has a very upscale restaurant called 1000 North.
Lots of options depending on preference. PonTiki is a fun tiki themed cruise, Love Street Outdoor Center has a variety of options, Blueline Surf & Paddle for paddleboarding, and Jupiter Dive Center for the more adventurous!