Since you are staying at the Hilton, I suggest you walk down to the Pelican pier one evening around 6 pm. It is between the Playa Linda and Holiday Inn. The Pelicans Nest restaurant at the end of the pier serves grouper that is grilled to perfection. It comes with rice and grilled vegetables and a roll. Grouper does not taste like fish at all. It is a very mild, sweet tasting meal. You sit on the deck watching the sunset. They also serve some meat dishes so you could split dinners if you wanted to. One get beef and one get grouper and share. my bet is that the one that gets the grouper will not want to share. The price last May was $21.00. On the low side for dinner on Aruba but one of the best meals we get. We have been eating there 2 or 3 times a trip now.(11 days to 2 weeks) I think they are closed on Monday but I could be wrong. You can see the menu at the following link.
www.visitaruba.com/readBlob.d?id=770&list=true . This link does not work on this site but if you type it into your browser, it will pull up on a separate page. Don't know why it wont pull up here.