Hello 
We are going to be leaving before a decision on our application to extend visitor status will be made. We are also planning on returning in a few months.
What happens if they refuse? If they give you an order to leave Canada, but you're not in Canada to receive it?
In such a scenario, could it cause problems for when you reenter Canada another time?
Should one, is there a way of letting CIC know you're leaving the country? Is there an office at the airport?

We are going to be leaving before a decision on our application to extend visitor status will be made. We are also planning on returning in a few months.
What happens if they refuse? If they give you an order to leave Canada, but you're not in Canada to receive it?
In such a scenario, could it cause problems for when you reenter Canada another time?
Should one, is there a way of letting CIC know you're leaving the country? Is there an office at the airport?