We are from Canada and have, on two separate WDW vacations, used Garden Grocer. Not only did it give us more flexibility in our holiday and save money but; the product was EXCEPTIONAL and the service was even better than that ! I refer Garden Grocer to every Canadian I know who is travelling down there and know many who have used you as a result. All have thanked me for the tip.
I would recommend Garden Grocer to anyone visiting Disney. The resorts are so huge that it is a significant trek just to walk to the restaurant each morning for juice, fruit and yogurt etc. It was a huge time and money savings just to be able to have a bite of breakfast in our room and then head out the the parks. In terms of value add, the best item we ordered was a case of water, it cost less than $10 for a case of 32 and I estimate that it saved us over $100 if we had purchased the water in the parks. The savings more than paid for our grocery order!
I ordered my groceries, picked the delivery time and they arrived when promised. It allowed me to start my vacation and relax with my family and not worry about out food.