Whilst I intensely dislike the one-island-per-Switch restriction, I can understand - thinking about how to handle someone visiting an island on the same Switch

Whilst I intensely dislike the one-island-per-Switch restriction, I can understand - thinking about how to handle someone visiting an island on the same Switch makes my head hurt. Couldn't have the player character there, you'd need cross-account communication of things like turnip prices, etc. (And if you disallowed people visiting another island on the same Switch, people would be up in arms about that too.)