We did for our trip this past January. We got a case of water, cereal, a few different granola bars, glow sticks/bracelets for the kids, and probably a few other things that I'm forgetting (sunscreen?). It allowed us to eat breakfast in our room. I packed plastic spoons and disposable bowls in our luggage. We did have to stop and buy milk at the hotel, but we still saved a bunch of money between the water, breakfasts and snacks.
When we checked into our hotel room, they asked if we'd like the packages brought up. We left for the parks and everything was in our room when we got back. Easy-peasy! I would definitely have things shipped to the hotel again, whether from
Amazon or
Walmart or somewhere else.