"I thought partying is about drinking alcohol and get fun as there is strong relationship betwen partying and drinking alcohol. why no alcohol? reason?"
Partying really is about being social -- getting to know people, dancing, having fun. Alcohol may or not be involved. In my opinion, people who think partying means drinking to drunkenness are losers who are too inept or shy to talk to others unless they are drunk. ENFPs are great at talking to others so we don't need alcohol in order to have a fun time. People whose idea of fun is drinking to drunkenness have never been the type of people whom I chose to hang out with.