Although it is legal to purchase or drink alcohol, minimum age requirements still differ across regions. Minimum age to purchase beer and wine is 18 years old while to drink is 16-18 years old. Minimum age to purchase spirits is 18 years old, while to drink is 18 years old.
Blood-alcohol limit is 0.08% (0.8g per litre of blood) while driving.
Drugs (including cannabis/marijuana) are illegal & criminalized which means you are risking jail time with other penalties (fine, community service, rehabilitation) if you are caught.
Prostitution is legal (in a way of exchanging sex for money). Brothels are illegal.