Most of the time many of the guys from the bachelor party groups end up having sex with a prostitute and sometimes a prostitute is even included in the stag party packages which many companies sell to the tourists. Anyway, dangers do exist on Prague’s streets at night, with more tourists victimized than ever before.
If you're walking alone or in drunk, do not show that you would be an easy target for pickpocketing or mugging.
You’ll find plenty of strip bars and late night bars, normally with special offers on drinks.
Some Laufhäuser have entrance fee, but often the entrance is free.
A Laufhaus is a place where sex workers rent a room where they can serve clients.
Usually prostitutes can arrange their working schedule and decide the pricing theirselves, but sometimes the schedules and prices are decided by the brothel owner.
Both things ("sex and drugs") which are tolerated in Amsterdam are also common in Prague.
Prague is very popular party capital mostly for British guys, who will come there to host stag parties or just have a weekend get away party.