A conviction for driving under the influence will undoubtedly give you a criminal record. This may have dire consequences on your employment, your ability to travel or even your requests with respect to immigration.
The infraction of driving under the influence includes a statutory minimum sentence which consists of a 1000$ fine and a prohibition to operate any vehicle in Canada for a year.
When the blood-alcohol levels are particularly high, the minimum fine can vary between 1500$ and 2000$. There are also additional sanctions is the driving of the vehicle under the influence resulted in bodily harm or death.
Considering these consequences and the general complexity of a driving under the influence case, it is always better to consult an attorney in order to get a better view of the situation and take better decisions.