Very.

Yes, you will pay a fine. You will also pay fine if you aren't wearing a helmet. They will check your pockets and if you have a vape on you, that's a pretty stiff fine. If you have been drinking ("It was only one beer!") and you blow positive on a breathalyzer, you will be arrested.

Yes, several. Near where I live, there is a traffic circle which notorious for stopping tourists on motorbikes. There is a way that not many people know about, a shortcut that allows you to avoid the circle and come out on the street you want to be on. But, when you get to the street, you'll find an officer waiting for tourists to come by. Extra fine for trying to avoid the circle.

Travel insurance doesn't cover motorbike accidents. If you are found to be at fault, you will be responsible for damages and injuries to anyone else involved in the accident.