I don't know anything about said school. But i would be surprised if any school would react too well to a holidaymaker who 'pitched up'.
I would suggest the alternative would be to write a letter, explain you hope to apply for a position in January and ask if it would be possible to arrange a visit to the school at the end of term.
I wouldn't turn up in your holiday gear either. I think they are quite a new school? but i'm sure they have standards.