Expats, do you use Polish language for most of time when you are in Poland?

or you hang out with people who knows English?

Depends, I've had times when I spend more time around English speakers (mostly natives) and times when I've spent much more time around Polish people. With Polish people who aren't my students I use about 10 times more Polish than English even if they do know English.

I also prefer to use Polish with other foreigners if they do know Polish (unless they're native English speakers).

Yes

To tell you the truth, no, as a rule. Once work is done (I work remotely into an office in London) that's it, I want to integrate with what's going on here.

That said, I am looking forward to a few beers with one or more of the PF locals sometime soon :)

not really, most of my friends use me as a free lesson, that's fine by me, they usually provide the beer and food when I go around their houses. In return they teach me some po sląsku which is way easier than polish.

But I do use it in the day-to-day things like shopping/taxis/train stations etc

My husband speaks more English than Polish language. He goes to work, speak English. He watches English TV channels. He speaks English at home... however somehow he learns Polish words and he is getting better and better. In few years he will use more Polish than English!

How do you define an expat :)
I regard myself as an immigrant, meaning came to Poland to stay here :)
At work I am the only Flemish between Poles...Most of my friends are Polish...So at work between colleagues it is Polish all the times..external French, Dutch, German, English.

At home "Pinglish" :) . And my social circle is almost completely Polish, so no English there.

Home 80% English, switch to Polish if the inlaws are around. Work 50:50 but the English portion increasing as I try and insist my staff get their English up to scratch. Social life - 75% English, other 25% in Polish with wife's friends

'merican most of the time.

Only Polish. Most people I know either don't speak English or don't speak it with me.

What is "po slasku"?

In Silesian (dialect of Polish)