Just You is one of the great companies that are just for solos and priced really well In short: The single supplement isn't a fine. It's one room's cost split one way instead of two. Travel and cruise companies drop it four ways: special rooms built for one, waived dates, room sharing, and trips where everyone is solo. The best deals are rarely on the website. Ring and ask. Book early (ten to twelve months out) or late (inside 120 days). Never in the middle. Shoulder season i