We had an addtl suitcase we didn't want to lug home, so shipped it home from BW. Worked fine. I think it's easiest if there is a business center at the resort, but it should be doable from each resort.
We stayed at POP in June and were able to ship 2 boxes home. It was easy. We went to the front desk and they had boxes and packaging tape right there for us to use.