http://www.aruba-travelguide.com/googlemap/
First you will want to see Arikok National Park. From the cruise pier you are simply going to head south out of Oranjestad towards the southern end of the island following the main road 1A (southbound)/1B (northbound). The first major sight on the right hand side is going to be Queen Reina Beatrix International Airport. Not worth a stop I know, unless you have somewhere more important to be, or like some Aruban friends, enjoy watching the planes take off and land (bench and shade are provided ) but at least you will know you are heading in the right direction.
Continue heading south past the Desalination Plant and Balashi Brewery using the same roadway. Once you get to the southern end of the island you will see the oil refinery, you can wind your way down from the highway through downtown San Nicolas to Rodgers Beach and Baby Beach. Baby beach is a popular destination for locals and visitors alike for swimming and snorkeling. Save the snorkeling for later in the day. Get out take your pictures and keep on touring. Rodgers Beach, although closest to the refinery, is very picturesque. Just try to look south and not north to keep the Refinery out of eye sight.
For a short version of this tour, skip the rest of Arikok National Park, turn around after Rodgers Beach and Baby Beach. Pick up the tour again in Oranjestad heading north (see below).
From Baby Beach, to continue the tour towards Arikok, once back upon the main road you can make your way east towards the dirt path which will take you on a circuit around the southeastern coast of Aruba. This is the windward side of the island and swimming on this side is extremely treacherous and discouraged due to the winds and currents. The large flat building surrounded by barbed wire is the prison with an oceanview, IMHO, not as nice as the one in Grenada. Though never actually stayed in either one.
The first small beach along this route is Bachelors Beach and the second expansive one is Boca Grandi. Continuing along the coastline you will
encounter Fontein, which at one time was open to the public, although I am not so sure it still is. Although other spots on the island had wells for water, this is the only spot on Aruba which provided fresh spring water.
Next, heading northward on the map you will see massive sand dunes. These are known as the White Sand dunes. The beach here is called Boca
Prins. It is however mislabeled on the map as "Dos Playa". Zooming in on the map you will see one building in the "middle of no where" just to the
south of Boca Prins. This is a small bar where one can stop for refreshment.
To get to the next stop on this tour, from Boca Prins you need to follow the path inland a bit to get around the sand dunes which as part of Arikok
National Park are protected. Once past the dunes, continue to follow the path northward along the coast. This next sight is Dos Playa. If anything it is a great photo opportunity and one of my favorite natural treasures on the island. In order to get to the second beach one would need to hike
across that portion of the park. I have never done it myself, but have always suggested this is the ultimate spot for a romance, a picnic and
sunbathing au naturelle. Just remember to glob on the sunscreen! There is parking at both Boca Prins and Dos Playa.
In order to get back to Oranjestad you again must retrace the same path from which you came. While driving through Arikok National Park be on the
look out for goats and wild donkeys.
Once back upon the main road, if you wish to make a short detour, you will see a sign for Lourdes Grotto. This is a Roman Catholic shrine built into
the side of a small cliff in 1958.
Otherwise you can continue driving north back towards Oranjestad. Now you have a couple of options. Stop the tour and continue later in the day from whichever beach you are at, do a quickie visit of the sights at the northern end of the island, come back to Aruba another time to finish the tour.
Either way to drive up towards the north past Oranjestad, to get a feel for Druif, Eagle and Palm Beaches, take the coastal road past all of the resorts, beginning with the Tamarijn. Turn right at Brickell Bay Hotel in Palm Beach to get back out onto the main highway which will then take you along the coastline to the Lighthouse/Malmok/Arashi (just follow the signs). You can end the tour here OR...
From the Lighthouse, click on the "plus sign" to Zoom in on the map and you will see the well worn dirt trail which you can follow along the coastline to get you to the former Natural Bridge and Alto Vista Chapel.
As a first time visitor, I would suggest taking in the Natural Bridge and Alto Vista. The Lighthouse can be just a "drive by".
For snorkeling, you can easily stop at Arashi or Malmok and head back to the ship from there. Sorry I cannot give you a timeframe on all. Cannot go by me, because I make dh stop every mile to take pictures. Also depends on traffic.
NOTE: Heading southeast on the map, you will see the next sight is the Natural Pool. You cannot access it from the Natural Bridge. That is unless you are on horseback. Otherwise you can get there by 4 x 4 coming from the inland rout. It is a long difficult trek to get there and would not fit into your timefrare.
this is what I found on cruise critic....
I suppose maybe the outlying areas didn't get plowed yet, I don't know. So I had to call work and tell them I can't come in. I was so upset because I can't afford to lose a day of pay with the 4 other days I'll already be missing for the holidays. 
Have to find someplace free to go so we can get out of the house before I go stir crazy. Need to go buy winter gloves so we can make a snowman later. Might go to the museum Tyler likes so well or the library for something free to do. BUT.....since I was bad and stayed up until 2am, I need to see if Tyler will watch a long movie and I'll nap on the couch until it's done! 
Well, I got lucky....he didn't play with them long and has put them away again! 
I think we're going to McDonalds so he can run like crazy in the playland (after my attempt at a short nap), then we'll go buy some gloves for me, then come home to make a snowman. Then maybe some cleaning after we come in to warm up. 
I hope you all don't think I'm nuts, but it just seems romantic to me.
