Never walk in the bike lanes, because the bikers won't stop for you. Don't become a victim of this by not taking it serious. When you hear their bike bells ring, move out of the way!
Because you will be most likely be sold total shit or maybe even robbed. Buy your softdrugs at a coffeeshop and use it there! Possession of soft drugs in public places is illegal and will incur a prison sentence. Hard drugs such as cocaine, heroin, LSD and XTC are strictly forbidden.
Find an urinal which are all over the place. At weekends, large plastic ones are placed all over the main tourist areas. If you are caught by the police, you will get a fine of EUR 40,-.