A recent study done at the University of Florida says that 1 in 5 drinkers are underage, drink more and stay later at the bars.

Gainesville's underage drinking ordinance went into affect in April. Patrons under 21 are not allowed into alcoholic establishments after 9:00 p.m.

Gainesville Police Department says some bars have had problems with underage drinkers. Police strongly suggest asking for two forms of identification which will make it much harder for those who shouldn't be drinking to get inside.

The GPD is holding its annual training session for alcohol establishments and for bars. City officials will discuss state laws, city ordinances, hours of operations and what an establishment can do if situations get out of hand.