Very convenient! This is a very thorough company; I got a text, email, and later a phone call to make sure I knew our order had been delivered. Before I even got off the plane I was getting notifications from them regarding my order. They really seemed to care and follow through to make sure I was taken care of!
We ordered from Garden grocer after we talked to a friend. It was easy and saved us from having to get groceries when we arrived at our Disney resort. It arrived in our cabin, cold things in the fridge and the rest on the counter. Well worth the small delivery fee.
I wrote a brief review of Garden Grocer here: http://www.lovelogicandlaughter.com/2014/06/disney-tips-and-tricks-disney-world.html