I'm only 13, and drinking is only an "every now and then" thing. I can say, I can take 2 and operate anything as usual. I mean I'll finish that 2 and ride a dirt bike, tractor, truck, anything and I will still use it right. I have never had an "adult beverage" while on the tractor, though. I know my limits, and I won't exceed them. Yes, my dad does know I drink.
Kyle