A group of us are heading over from Scotland in the next week or so.
I started a thread on here about working in Lodz as I'm from Scotland and working here for 3 months. I'm in Lodz at the moment for the next 3 weeks.
The beers are less than a quid in most places. Plenty of off licences.
Someone gave you good advice about not getting drunk and acting like a clown as you will stand out and either get lifted or get bother. Also, the bouncers take no **** either.
The main street with all the bars and clubs is Piotrkowska. Google Lodz in your pocket and it will tell you what you need to know. Or drop me a PM if you have anything specific.