Preparing for my first charter out of Rodney Bay with Moorings. Looking for suggestions on where to shop for provisioning. Was planning on using Moorings on line provisioning service but found items to be very expensive like a small bag of charcoal for $25, $10 for a can of orange juice, and $48 for a case of Carib. Looking for some advice. Thanks

There are two large supermarkets in Rodney Bay and one between Rodney Bay and the marina, you'll pass them on the way from the airport to the marina, just ask you taxi driver to point them out.
You can grab a bus outside the marina for 1.50 EC and then take a taxi back or dingy to the far end of the lagoon, you'll see a small dingy dock. Take the walkway to the main road and turn left, the supermarkets are right there.
If you arrive a day early, the market in Castries has loads of fresh fruit and veg plus local spices and sauces.
When is your charter?

Feb 10th one way to Grenada.

You're in for a great time, the Grenadines are stunning.
Best lobster guy in the Cays is Jean Claude AKA Mr. Fabulous, he's listed in the Doyle guide.

Thanks for the info

What we did last month was dinghy over to a dock near the shopping mall where one of the larger supermarkets is. We provisioned and then brought everything back in the dinghy. Worked out very well for us.

From the mooring dock, you head the opposite direction from the channel entrance there's basically another section to the harbor. The dock is in there. As you enter the section, it is on the port side all the way in the opposite corner.

What Maytrix said, best is to dinghy over to the mall.
It can be tricky to find if there are no other dinghies there, so here ya go:

Oh yeah, and feel free to use a cart from the grocery and leave it at the dinghy dock. I believe one of the locals will collect a bit of $ returning back to the store.

Awesome, thanks for the map.

Just to add to the map - the moorings dock is the dock on the right at the top of the map. That is where you'd be coming from.