> Piątek (possibly means drinking day?)

The word means "the fifth day", from piąty (fifth) rather than pić (to drink).

Wtorek (Tuesday) comes from wtóry, meaning "second".

Środa (Wednesday) is from środa, meaning “middle”.

Sobota (Saturday) is from Hebrew שַׁבָּת‎ (šabbāṯ), meaning the Sabbath.

Oh yeah, I guess I was tired and didnt make the connection

‘Sobota’ resembles ‘sábado’ in Spanish and might refer to the Sabbath?

Wtorek probably means "the second day", and Środa means "middle". Piątek probably means "fifth".

Those all loosely resemble the Russian names, and as the other commentator noted “Sobota” sounds a lot like “Sabbath”