This....
I am always prompt for my reservations at any restaurant (or call if I hit traffic or some other unexpected delay). However, this is a quick service place. No one is getting held up because I am 10 minutes late here. The only delay people are experiencing at BOG is if they did not pre order and then have to wait on the line to order at the kiosks. Me being late has no effect on that. This place is huge and at least last week had tons of empty tables to choose from.
Also I thought I read that you can show up early for your BOG time and they just tell you to go in. As long as you are on their list it didn't seem to be a problem. So you would be actually "freeing up space" if you arrived early maybe!
I am not advocating being intentionally hours late for a reservation. I think they are just glad you are there and spending money (way more than the $10 cancellation fee!) so I can't see them turning you away especially when it is not reserved seating.
I also would not want something I did to negatively impact another person's experience but as I said I can't see how even 10 parties being late would hold anyone else up down the pike, other than as I said, maybe making the non preorder line longer.