IDK if anyone ever took our stuff or not or if it was even "the right thing to do" but we had a lot of water left from our last trip and couldn't' carry it all down to the lobby to a new guest coming in (we were @ ASMo) and couldn't bring it on the plane so our delivery from gardengrocer came in a brown paper bag, we put the water in there wrote "checking out today, left over water, please help yourself" and left by the ice machine. Don't know if anyone took it or if mousekeeping just threw it away, but it was worth a shot. None of the waters were opened of course. GL