but we've been having some minor qualms about driving on the left side of the road...
Greetings from St. Croix Regulatrix,
Our vehicles are all left-hand drive, just like on the mainland. You don't have to worry about turning on the windshield wipers instead of your turn signal, lol. Just remember to keep
your left shoulder to the (roads) shoulder. The left-hand drive also helps, since you sitting on the left, you can see how much room you have and stay close to the left-hand shoulder and away from oncoming traffic.
Except for lunch hour and quitting time our roads are pretty uncongested. Unless there is a repair going on. Because of our legendary potholes, most people go pretty slow dodging them, lol. You'll be fine, just stop a moment and think before you pull out of parking lots/spaces.
Depending on where you are staying and where the shop is located you may not even need a car to get to the shop. But you'll definitely want a car to get around to see the island. Make sure you make it over the Christiansted to look around and enjoy some great restaurants. Google maps work here (for the most part) so plug stuff in to get directions. If you have any questions PM me, happy to send you my list of things to do, radio stations, local lingo...etc that we give our clients oh, and some coupons for local restaurants and shops.
Enjoy your trip and the diving.