Can two accounts be played on the same device?

No, you don't have to log out if you use two separate search providers on your laptop. Example Google and Firefox. (This may not work properly on mobile phone or tablet but it is possible.) Using a pc laptop - log in to Facebook in Firefox and then log into Facebook in Google signing in with the other account. You will then have two accounts side by side and enter June's Journey from each account.

Yes, but it's best to have 2 Facebook accounts to back them both up. You'll have to log out of the game (in the game settings) and out of Facebook each time you want to switch.

I don't play using Facebook. I just use from Play Store. My husband wants to play also but we need to share a tablet. How do we do this. It's ok for me to sign out so he can play.