Everything to Do Before The Isle of Mists in The Witcher 3

In The Witcher 3's main quest, you will eventually take a boat and sail to the Isle of Mists; you'll receive a warning: "You are nearing a crucial point in the game's story. It is recommended that you save your game in a Manual Save Slot now." It's recommended that you turn back and avoid doing The Isle of Mists quest until you've first completed the side quests shown below. The Isle of Mists is a crucial cutoff point for many side quests in The Witcher 3, and you can find a full list of them below.