Let me ask you this... I had 4 beers on Friday and 2 beers on Sunday... and I got alcohol and drug tested on Monday... what is the odds of me failing...

Quite high. I would almost guarantee that you will fail.

Considering that a failed drug and alcohol test usually carries with it some form of punishment, be it incarceration or termination of employment, have you made the necessary preparations?

I wouldn't bet on you passing, though I suppose anything is possible. The odds just ain't in your favor.

The odds of failing are higher than passing, simply based upon your drinking Sunday and testing Monday.

However, some basic information might prove helpful, such as when you stopped drinking (time of day Sunday), if they were average, 12oz, regular alcohol content beer vs. IPAs or homebrews, when you were tested on Monday (time of day), are you being tested for EtG or just for alcohol and what is the cutoff level for testing (if you know) or, who is doing the testing - employer (random), court ordered (probation), etc. It doesn't change a lot, but... there are quite a few variables in there that you don't address that could make a significant difference.