Headscratchers / There's always more

• When Jack introduces Hiccup to his parents over Easter break, they perform multiple spells within eye-shot of North, Anna and Emma. In the books and films, use of deliberate, underage magic within the presence of Muggles are tallied as demerits to their record, two cases of its usage leading to expulsion from school and/or even a hearing from Ministry officials.
  • Word of God states that the rules have since been changed since the events of the Harry Potter series.