You probably want an operator near where you are staying or just west of there. If you plan shore dives, most of the great sites are towards the west end of the island. Close to town, you should do Varsenbaii, aka, the police beach, they charge a small fee, but easy entry by beach or steps and just a beautiful site. If you want to spend the day diving and relaxing on a great beach with restrooms,showers,rinsetanks,food and drinks, consider Cas Abo and Porta Marie. Both charge a small fee, but very much worth it. Playa Kalki is a must do shore dive, my favorite, go to the west when you enter the water, fabulous site, you may want to do this more than once. Allwest has a dive shop at Playa Kalki, you can call them and you may be able to get tanks there for your dives there. They also have a great dive boat, usual two tank trip includes watamula and mushroom forest. Both are great sites and need to be done by boat. We also enjoyed dives along the San Juan Landhuis property, small entry fee, the guy even gave us a tour of the landhuis, take food and water and many tanks and spend the day, great dives. If you want to see the underwater statue of Neptune, ask at Allwest, it sits in front of Allwest Apts, it's just west of the apartments, in about 25 feet of water. Great place for a photo. There are many great places to dine, a local favorite is Playa Perla Canoa, located along the north shore just east of Williamsted, great fresh seafood at reasonable prices. If you don't eat at Fort Nassau, at least go up for the view, you can walk about the fort without entering the eating establishment, beautiful at night as well as in the day. Hope you have a great trip.