We have used Garden Grocer twice and have been very pleased with the service before, during and after the sale. It is so comforting knowing that your groceries will be waiting for you at your resort.
I wrote a brief review of Garden Grocer here: http://www.lovelogicandlaughter.com/2014/06/disney-tips-and-tricks-disney-world.html
Your website, service, etc. was excellent. I can't think of any improvements that are needed.