Polish eat potatos with everything... Have a lot of names for potatos, depending on region... (ziemniaki, kartofle, pyry, bulwy, I am sure you have more those are the most popular)
It’s same for Russia, Belorus and Ukraine, too. I like it
After plane lands people claps, at least they used to, this tradition seems to fade away... (it looked strange to even to me, are people happy that the plane did not cruch or what )
Sometimes observed it in Russia, just a way to say thank you to pilots. (guess happy it didn't crash, too)