Tenerife is one of the most popular destination in Canary Islands. It is considered less expensive than most of the European destinations. A pint of beer costs between 2-67 to 4.0 US dollars depending on brand and quality.
It depends on your body weight and a variety of other factors. General rule is that a beer has as much alcohol as a shot or a glass of wine and it takes your body about an hour to metabolize that much alcohol.