Complex sentence: The people that take part in the festival are usually enlisted in "filaes" or "comparsas" (companies that represent the Christian or Moor legions), and for several days, they parade with bombastic costumes loosely inspired by Medieval fashion.
Split into simpler sentences: The people that take part in the festival are usually enlisted in "filaes" or "comparsas" (companies that represent the Christian or Moor legions). The festivals last for several days, and feature parades with bombastic costumes loosely inspired by Medieval fashion.