I haven't ever done anything really wild, maybe a couple places that were like a 15 minute walk or so. However, back when I worked at the Chipotle in Harvard Square (RIP, good riddance) we had a delivery order for the store upstairs, which I believe was an REI or some other outdoors store. The driver didn't even have to leave the building or take the stairs, because there was an escalator right through our side door in the building lobby. Not a big order either, like a single burrito or something. I assume they had a delivery only promo, otherwise it makes no sense.