I was at SFWoA last year when a tornado was just a few miles away. Most everyone left, but those who stayed gathered in gift shops, restaurants, bathrooms, etc. and there was enough room. When the storm had passed over (no damage reported) all the people left in the park got free passes to return again. These were given out because 6 flags closed a half hour early.
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Spread your wings and fly away!! X-Flight '01