Boy, that is a tuff one. All of those options are available to you on Aruba. If he really wants to play golf, this would be the place. Why not rent the jeep 4x4, drive him to the Tierra del Sol golf course, continue down the road to the California Lighthouse, the Natural brige, Baby Beach for some snorkeling and back to Palm or Eagle beach for some sun bathing. Don't miss some beach time on this beautiful friendly island. Usually you can park at Mancibo beach which isn't too far from the Lighthouse also. If you also want a beach bar and rental of a lounge chair, then going in front of one of the Hi-rise hotels (Palm beach) would be the place for you. Sometimes if they don't have a convention or group, the Holiday Inn will let you rent a lounge.
Bon Voyage