Hi. We used wegoshop.com in August and loved it! Will never go to a grocery store again LOL.
Basically, you can look at the local store ads and decide which store you want them to shop at. You give them a specific list, brands if necessary and sizes, and if you accept substitutes. We did a few buy one, get one free items and got everything exactly as we wanted.
They can usually pinpoint your time for delivery. We told them we'd be checking in around 2:30 and they called me at 2:00 and asked if we were there because they had my order in the car. We were just checking in, told them our site number and she pulled up at the same time as we did to our cabin. Took 3 minutes to unload.
There is a delivery fee based on the size of your order, and you get the actual store receipt to show exactly what you paid for - no markups.
I like this better than Garden Grocer. That site has a smaller selection and I consider very high prices. It is easier though because you can shop and pay for everything online.
If you have a kitchen, definitely think about some groceries. We don't cook big meals any more in our room, but we like having sandwiches, soup, one night we ate a couple boxes of mac and cheese because we get tired of eating out. At the cabin, we grilled outside a lot so we ordered ground meat, hot dogs and chicken breasts. We even got fresh items like tomatoes, onions, avocados - all great and we felt we ate much healthier than we could at restaurants all week. Definitely we ate breakfast every day in the cabin.