Yes as long as its sealed, when we go we bring a small bag with chips and some water bottles and they let us in.
The rules say no but we brought in food in sealed containers. Things like packaged foods, crackers, cheese, etc. However, we found that Silverwood doesn't gouge you on food and drink purchases. Everything was surprisingly affordable. Very family friendly pricing.
No outside food or drink, except sealed water bottles. They do allow reentry though, so keeping something in the car or going to town to get food is doable. I think the pizza in the magic show area is the cheapest family meal, about $25-30 total
They say no food but they don't really enforce it. You can pack a lunch in a backpack. They won't let you bring in a cooler or anything big.
We kept a cooler in our car and went out to the car to eat lunch. I don't believe you are allowed to bring food or drink in.
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