West Bay Club is a new resort like the Gansevoort so it hasn't been open for a really long time (for us a couple of years is not long). They also haven't marketed to weddings as much as Gansevoort so that may reflect why they haven't had as many. The Turks and Caicos is not a HUGE wedding destination or even a huge vacation destination compared to Mexico/Bahamas/Jamaica. In reality we have less than 200,000 tourists a year and in turn (except for Beaches) not a large amount of weddings compared to larger islands. While I can understand your initial apprehension, it's really just a matter of not enough weddings to go around really.
We've done quite a few family portraits at the West Bay Club and that may be another reason for the difference in weddings vs Gansevoort. Gansevoort is a very modern and trendy type of hotel that does market to a younger crowd (ie people who are more likely to be getting married) vs West Bay club which seems to appeal more to families (ie people who may already be married). I am just guessing here on that, but in looking on our blogs, we have lots of family shoots at West Bay Club and weddings at Gansevoort.
Villa Renaissance is going to be more centrally located for guests to walk to various shops etc. But everything is pretty close on Provo, so if you stay at the Gansevoort or WBC you won't be driving very far
Here are some recent weddings at Gansevoort:
This is the only one I can find at WBC (I'll ask my husband if there have been any others, we don't blog all of our weddings, some couples don't want to be on the internet)
And here are some Villa Renaissance weddings:
Bay Bistro and Kissing Fish are the same company, Bay Bistro is the actual "on the beach restaurant" and kissing fish is their catering company. So you can do the reception at the actual restaurant or you can have them set up where you want the reception and they'll bring tents etc. Their food and catering is fabulous. Absolutely love it and I never have heard an even average review of them, people are always blown away (I have no investment in their company by the way, but I do love their beach barbecues and curry night LOL) they really are the best caterers around and Joan (Kissing fish contact person and owner) is a type A personality who will get back to you quickly and handle all of the details.
I have lived here now for 16 years so if you have any questions ask away.
Hope that helps a little!