also , he knew if the other guys started drinking now it would have the following negative effects on him : 1.at least three additional piss breaks prior to arrival 2.small jealousy factor that everyone else was drinking 3.higher likelihood the one or more of the other guys would end up too drunk by midnight to enjoy the whole night 4.risk of spilling in the car 5.legal risk if they get pulled over alex : lets just make it to vegas and you can drink all you want there .