Dancing without a caller.
If you are dancing 'local' dances you don't need a caller.
E.g. the Breton couple and circle dances at a Fez Nos
E.g Irish set dances that were danced in farm kitchen and had developed from the Sets of Quadrilles taught in the early 19th Century. Each area took the set and made it their own, and only danced it one way.

If it becomes a hobby, and you want variety, then you need a caller.