We declare this mandatory in front of each home. Do not repeat dance types of your neighbour (salsa, waltz, chicken, etc.). One of each dance type per block only, except “contemporary” of which three are allowed but dancers must do unique interpretations thereof. https://twitter.com/meghanjmjw/status/1253124503313547271

Addendum: woth regards to contemporary, interpretation rule is non-renewable, dancers may repeat/improve routines on subsequent blocks to achieve perfection. Costume changes are encouraged, but optional.