I'd like to send a present to a WDW resort room

My sister and er family will be going to WDW for the first time this April. They’ll be flying in and staying at Port Orleans.
This trip is supposed to be a celebration on many levels, and I thought to send a package to their room to greet them (princess dresses for the girls, my sister’s favorite power bars etc).
Has anyone ever tried this? I plan to call the concierge as well, but I was hoping to hear if anyone had experiences (good and bad) with this.I put a search through the board, but nothing has come up.
Thanks in advance!

i have never done it. have you called Disney to get guidance?