The kids will get a kick out of watching the boats come and go from Raja Ferry Port. For a bit of family fun, why not buy some tickets and head somewhere interesting?
When you've finished at this Ko Pha-ngan ferry passenger terminal, why not make your way to Haad Rin Nai Beach, Ban Chalok Beach, and Tharn Sadet Waterfall? They're near Raja Ferry Port and also popular with many travelers.