Will it be out of my urine Monday morning

In all likelihood the alcohol (ethanol) will be clear within about 8-12 hours.

If the test involves EtG however it will not be clear.

I guess why does one drink if they know they are not suppose to and will be tested

The best you could do to try and make sure it is out of your system by Monday would be to sweat it out of your system try exercising this will help