Not trying to get off topic here. The course that they will give you is considered a "Discover Diving" It is meant only to give you the basics to be able to complete the dive(s) that you plan with them. It wont offer any real certification. But is a great way to see if diving is right for you. Be careful and follow what they teach you to a T. Really though, from what I know about you, your gonna be hooked, just like a big ole marlin.
There is a huge difference between being down there with time to look around and interact and snorkelling. It does strengthen things with couples as you rely on each other for life suport. Communication is minimal with hand signals, maybe some simple notes on a tablet etc. Plus your experience is individual to the two of you, and is different with each dive. Regardless of how many times you've dove the same site. You'll see things that many people dont ever get to see I suggest that you look into it, it really doesn't cost that much and is a great activity, for saltwater junkies especially. My son will be 12 this year, he gets his jr. removed from his cert. so he can go to 60 ft. now with me. We are planing on going to Destin Fl. right after for some sand sun and salt. The Oriskany is down that way, it's a sunken carrier, the only one in the world you can dive. Hopefully one of these days we'll both get nitrox certified so we can go down to the deck of it. We have a slide in truck camper and a 20' pontoon, makes for a great cheap vacation. If I can just get him over the fear of sharks....
Damn JAWS, who let him watch that show anyway?
I'll stop rantin' now.