What happens if I don't get along with my cabin mate?

Tell the cruise director privately. On boats with spare capacity they will move one of you; if the boat is full they mediate. Genuine conflicts are rare.

Shared cabins work far more often than people fear, mostly because you are barely in them. A liveaboard day is dive deck, salon, sundeck and briefings — the cabin is for sleeping and changing, and you are both exhausted by 10pm.

That said, mismatches happen: snoring, very different sleep schedules, or someone who wants the air conditioning at 18°C when you want 25°C. The first move is a direct, friendly conversation, and most of it resolves there. Bring earplugs and an eye mask regardless — they solve the majority of shared-cabin problems before they start.

If it does not resolve, speak to the cruise director privately rather than making it a group issue. On a boat that is not full, they will usually move one of you to an empty cabin at no cost. On a full boat, they will mediate and, in serious cases, involve the captain.

Genuine conflict is rare enough that most crew struggle to recall an example. Liveaboard guests self-select as people who are happy in close quarters with strangers who share their obsession. If shared accommodation still worries you, the single supplement or a guaranteed-share option with a fallback to private occupancy buys certainty.