Will we need a permanent internet connection to play the game? Or can we play (single player) offline?

I asked this question a while back.  I want to be able to download and play, although I don't mind making regular purchases in order to get new decks.  The way I see it, as a complete noob, is:

 

1.  Paying for new decks is okay

2.  Paying for expansions is okay

3.  Subscriptions or weird access schemes will undoubtedly result in my abandoning the game.  No hard feeligns.  No muss.  No fuss.  Just won't do it.

You can play RotR offline if you own the adventure decks you want to play.

You can play RotR offline if you own the adventure decks you want to play.

 

Please, for the love of god, don't have automatic Google Play integration that you can't turn off. Most obnoxious crap in the world.