I wrote a brief review of Garden Grocer here: http://www.lovelogicandlaughter.com/2014/06/disney-tips-and-tricks-disney-world.html
I've used Garden Grocer several times and they truly are great. Customer service is amazing and each time I use them, there are more and more options. I've recommended them to several people. In fact, I told our friends about it the day before they left for Disney and they had food delivered two days later!
This was the best thing we ever did! I received a text message when my order was delivered, everything was packed very neatly and it was delivered by 2pm. The time slot we picked was delivery between 12-4, it was perfect!! We will do this again!