I did! We used FedEx! It was cheaper than UPS for us. I have heard that the convention center-attached resorts are now charging you $10 if you receive a package there, but people's experience with actually being charged has been mixed.
Still, it would be worth it not to have to schlep the stuff.
On the advice of a fellow DISer, I put this info on each box and on a piece of paper IN each box:
- name
- in care of [the resort where you are staying]
- hold for check-in on [your date]
- the resort address
Don't put your ressie # on the boxes because that # is linked to your credit card.
We shipped stuff about 2 weeks ahead, FedEx Ground, and it arrived within a week. But we're in California, so your results may vary!