I have been wondering about this too and unable to find a prior thread with the answer. I called RPR, and you can ship to the resort. Since it is a convention hotel (like CSR), a 3rd party handles the incoming shipments and charges a fee (like CSR). The front desk told me it's based on size starting at $5 then $10, $15 and etc... plus tax. I asked what a case of water usually falls within, and they said usually it's $5.33.
If we do not rent a car, I haven't found the best solution for us yet.