That’s exactly what I’ve done, since the online ordering has been available. It’s way easier to have cases of beer and gallons of water, etc..delivered, then send one or 2 crew to the shop for produce and other items while I do the boat checkout with the charter co. My wife likes to put her hand/eye on the more fresh things before buying - in reality though, the deliveries have been nearly 100% in their accuracy. I’ve used Riteway in the past, Mrs. Skytrucker says OneMart is equally good for in person shopping…

This year we’re in charge of our septuagenarian parents (both mine and in-laws😳) we might nearly order everything, just so we can focus on making their first charter trip as easy and awesome as possible.
Something I always tell myself when traveling in any mode is: “people live here” meaning, whatever I find I’ve forgotten, I can probably get, wherever the local people get it…if you’re missing something critical there’s places around the islands that you can get something to sub in for it. (The leverick store comes to mind as a fairly well-equipped mid-week reprovision)