Premium Family and Raumfeld

[Airjanus]

I have just bought a Raumfeld multiroom wifi system at home, living room with a soundbar with sub and 2 OneS speakers in stereo and soon at the children's room (2) also speakers, and the bathroom and garage or garden also a speaker. We are with 4 persons. I'm advised to contact Spotify for the details Raumfeld couldn't give but it looks like there is no direct support to contact.

So here the question:

Is it possible to stream different streams to all the different rooms simultaneous?

Is it possible to use Spotify connect on different devices and stream to the different rooms? (a bit like the first question)

Is it possible to have offline music on at least 4 mobile devices? also 4 different library's? (don't want (all) the kids music.. 😉 )

Best regards