I think it is perfectly fine. As long as your not taking a lot, of substantial food items. They make enough money of food, an apple or muffin here and there is perfectly fine. I often do this at other hotels.
jphripjah - taking silverware is far more expensive to replace, and is something that other guests need. ie. If 30 people took a fork and knife, it may actually cause problems. If 30 people took a banana, or muffin, or apple, yes there may be less supply to other guests. But the resorts would just order more.