I've been to dozens of F1 races, most in the Paddock Club and it is indescribable. Except for the VIP Pit Walks, I didn't often get into the pit when people were working, and never during a race but you are right. Incredible people, you can't imagine the professionalism and how finely tuned even the back marker teams operate. There is nothing like it! And the sound!!!!! Back in the 2002-2003 BMW V10 engine days, the noise HURT even through the earplugs! It shook my bones and still gives me goosebumps. I haven't been to a race in the current V6 Turbo era so can't compare but I imagine it is still awesome. But it really has become too expensive. My way was always a fully paid ride and can't imagine paying a couple thousand for a weekend in Montreal now. But .. mayyyybee if it's a nice weekend I might try a last minute road trip this year!
If anyone gets the opportunity, go! It's like a magic mushroom trip in terms of the experience being indescribable. If you are a fan of F1 it really is worth going at least once!