We stopped at California Light House, Calibri(?) Rock Formations, Baby Natural Bridge and then to Palm beach for an hour.
The tour guide was really funny and nice, but there just isnt really much to see on the island. The best part of Aruba are the beaches! Go there! The other areas are mildly interesting, but not that great.
Curacao is under heavy construction everywhere and there really isnt much unique there. One recommendation though is to cross the pontoon bridge and go to the row of restaurants that are in the old fort wall right on the ocean front. Great views and great food. Dont get a full meal, just go and get a drink and appetizer.
Love this place for relaxing and sitting on the beach. There isnt much to see here as far as sites, but it is a nice private island for sunbathing and relaxing. Walk down to the right on the beach after you get off the tenders because this side is far less busy and there is a graveyard you can see that is right next to the beach.