The devices at the cabin ideally would need to be switched to using the same Sonos System/Household ID - so I would personally just add the existing cabin WiFi credentials to the Home Sonos System. That would be my preferred way to go about things and then all Sonos speakers, Home and/or Cabin, will work at either location once a single device is taken from the Home to the Cabin to ‘extend’ the Sonos Household (to which any other Cabin speakers would then be added, post-reset) - They will all also then use the same music service accounts and the same Alexa (or Google) voice assistant account too.