I have no idea why Finnair has no audio on the 32S aircraft. I've been on the 320/321 a few times and it really feels odd. I'd prefer simple audio over those screens.
Regarding the Kämp, it sure is a fantastic hotel, I considered using my Free Friday there when I lived in HEL, but opted for a cheap AMS run on SAS instead. And it can be had for around EUR 140 usually on spg.com or through various promotions (My Amex statement has Kämp offers all the time, recent one was EUR 150 for two including breakfast and Xmas cocktails).
Happy Holidays,
LH747FTL