The items that I ordered were delivered the time I was promised. The only item that I had an issue with was the 2 dozen eggs were broken but I called right away and the items were replaced by the evening. A friend of mine is going to Disney in December and I recommended that she use Garden Grocer. Overall using Garden Grocer for our grocery needs was an excellent choice and I would use them again.
Read about garden grocer on Disney blogs and specifically how beer is not regularly served in the park, and is very expensive. I ordered some groceries a few days before my trip, received a text when my items were delivered, and had them brought to my room as I arrived. The minimal delivery fee is well worth it when keeping in mind the considerable upcharge for items in Disney parks, especially beer which is $8 for 1 can at my resort when I paid around $10-11 for a six pack at garden grocer.
Half way through our vacation we realized we needed charcoal. We called and ordered a bag but we were too late. 10 minutes later the driver called us and said be would bring it. He had a delivery very close by and it wouldn't be a problem. We met him out in front of the hotel. You all are the best!