I took it by the Certified Collision Center same day I reached out to them for quick inspection. It took 4-5 days to get the glass from Rivian and they installed it next day after it was received, including an offsite recalibration. The recalibration alone was $1k, but in NC broken windshields...
I recently had to replace my front windshield and I was able to take it locally to a Rivian Certified Collision Center rather than to the closest SC, which is 4 hours away. Rivian customer service can tell you if any are located closer to you.