How do i attack with the warriors, do i need weapon? 

i added 6 warriors to enemy parlours but they just stand there for 7 days and no attack

I guess you occupied a parlour of someone you fucked before.

Then you took 6 of your brave warriors and sent them to your opponents parlour.

Unfortunately for you this occupation only last 7 days and when your opponent does nothing (attack or collect money) there will be no action.

And now the best ;-)

If you did this to an inactive player (offline for more then 7 days) this won't change in the future.

Hail to me and peace to the world!!