Nobody does the split provisioning any more. If you search provisioning you will come up with many options. Personally if it’s just the two of you order water, drinks and other heavy stuff from the Moorings. You can get everything else you will need from the store onsite at the moorings behind the pool. If you want any special wines or alcohol Tico’s and Caribbean cellars are a 5 minute walk. The French market right across the street has additional options. Riteway is a 10 minute walk but no real need to go there.