My wife and I recently did the half day UTV tour. It was pretty cool as our guides were awesome (sorry....I cant remember their names they are pictured below). We saw the Beautiful Landscapes and Dramatic Veiws of Aruba and some other cool stuff. Snorkeling in the natural pool is a must....especially if its your first time. As for the UTV....the road is rough, you will get extremely dirty but its sooooo worth it!
Wear comfortable clothing because it gets HOT, make sure you eat, and get ready for an awesome experience. They've got you covered