Just arrived - Plan for the weekend? (Warsaw)

Hi all.
I am just arrived in Warsaw since a couple of days....Already suscribed to the next event I will possibly join without any problem (still looking for a flat, but I have time:-).

I know that here in Poland since tomorrow is a national holiday, so I would like to join the atmosphere in the city, join the events or whatever is available in the city ;-)

Also a walk with a drink would be great.
Is anyone free this weekend to introduce me to the city? :-)
It would be great!

Looking forward to your answers ;-)
Then I could send you my mail and mobile phone if you prefer.

Hope to see you soon guys ;-)
Ciao,
Luca