I used them last August as well as this past spring break trip.
Last August I had 2 Prime Pantry boxes plus one regular
Amazon Prime box sent to Pop Century. That afternoon, they delivered it to the room while we were out. I had left a note and a tip for the runner delivering it, but he/she instead left a note saying to have a nice day and didn't take the tip.
I had a Prime Pantry box sent to AKL and they also brought it to the room. I wasn't there but DH promptly unpacked it all.
Pros: the prices for many items are even cheaper than I pay at our local grocery store. They carry many items not listed that GG carries. They are way CHEAPER than GG on almost anything. They deliver some beverages (but watch how the box fills up). Got 6 quarts of Almond Milk for like $10. I forget but it was cheap. DH drinks the stuff - Me, I prefer regular or soy but he's so dang picky! DS is dairy allergic to it's all good.
Cons: no fresh fruit, produce, dairy of any sort, no meat, cheese,
But, GG will deliver WINE and BEER. Alas, they stopped delivering vodka. Sigh.