Never been to King's Casino, but I go to smallers casinos in Czech Republic a few times a year to play live (cash games are illegal in Poland) and I found the game quality to be really hit-and-miss.
It can also be very hard to tell what kind of table you are at right away, one of the best live tables Ive ever played at started with me, 3 good regs and 5 OMCs - but then good regs left for a bigger game, and OMCs started drinking and going absolutely crazy (guess they werent really "OMCs" to begin with), and now good regs are on a waiting lists to come back to our table
Anyway, enjoy your trip and keep writing the updates plz