Yup,
As other people have said, you can cross fine, but just like back in BC, if you have too many people in your car and get in an accident (even if you are not at fault), you're insurance will be void. If anyone gets hurt, it's quite possible that someone you thought was a good friend would be pretty unhappy. They would be able to fuck your life by suing/pressing charges and you'd be in a shitty place.
Just saying.
I can't say whether or not the cops would ticket you for breaching the regulations on your license as I've never been pulled over, but if any damage actually happens: no coverage.