This is exactly what I do. I put together my order and continue through to the checkout page to see what the estimated delivery date is. I like to have my order arrive the day before me, so I put in the order when the estimated delivery date is the day before I arrive. It has worked well for me the 2 times I have ordered from prime pantry.
I also do what a PP suggested, which is write your arrival date as part of the address of your resort. I put the lead name on the reservation, reservation # and arrival date along with the resort name and address.