I ordered online from the uk and the whole process could not have been easier. My order was waiting when we arrived at fort wilderness which is great news as the grocery store on site is very limited!
I could not have been more pleased with the service. I got a phone call within an hour of my order confirming, delivery was early, and then received both a text and a call that my order was delivered.
Delivery was on time and they contacted me to let me know it was there. Service seemed very personal. I highly recommend Garden Grocer to anyone staying in a WDW hotel. It's so nice have snacks and drinks waiting for you in the room when you return from the parks.