You get a horse and arrive at the castle within seconds but the horse is too old and doesn’t work with the castle.
You remove the horse, destructure the castle and rescue the princess within seconds, but now you have no horse.
While you’re finding a compatible horse and thinking whether you should write your own horse, Bowser recaptures the princess and moves her to another castle.
You have rust.
You get a horse and arrive at the castle within seconds but the horse is too old and doesn’t work with the castle.
You remove the horse, destructure the castle and rescue the princess within seconds, but now you have no horse.
While you’re finding a compatible horse and thinking whether you should write your own horse, Bowser recaptures the princess and moves her to another castle.