i have worked as a bar staff in big and small establishments
if you want to be a bartender find a job in a small pub its easy. the bars are easy to set up and clean and the pace is relaxed, you can talk and have chill
if you work in big clubs.. you really have to earn your pay when it gets busy!! many times during happy hours or holiday eve i was in the bar and there are idiots yelling from your back front side for their drinks
bartending is fun, you get to meet people, most guys go to the club to have fun so most customers are in a relaxed mood and the job is not stressful.
i have met some asshole and crazy people that had to be escorted out by security
fun times. but working night shift long term is terible for your health, its very very tiring