I do not think any type of improvements need to be made. Was super easy and it appears you have perfected your service :)
Excellent! Our groceries were there when we arrived. Even though our room wasn't ready, the Coronado resort held our items until we got to our room. Definitely worth it.
GG was very easy to work with. Everyone was very personable and did their best to accommodate my special request. I will certainly use them again next time we are staying at Disney!