FWIW......All though I don't know what might have caused the "pin holes" you noticed, I don't think it's likely they were caused by the fireworks. Burning "embers" from fireworks landing on your awning, hot enough to "burn / melt" through the fabric /vinyl, would have left noticeable burn marks on other surfaces than your awning. (I've had campfire embers land on both fabric and vinyl awnings with no damage)
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2017 29RKS
2018 Ford F-250 Lariat, 4X4, 6.7L PSD, SC, SB
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