Originally, Rita Skeeter's role as the nosy investigator in Goblet of Fire was going to be filled by one of Ron's girl cousins. But J.K. Rowling decided (regretfully) to drop her character. Rowling...
PGGoblet of Fire is definitely still kid-friendly (at least, sexually speaking; otherwise, it's kind of violent). We don't see much more than Fleur Delacour and Roger Davies making out in the bushe...
Possible InspirationsThere are no direct references to other novels in Harry Potter and the Goblet of Fire, although J.K. Rowling has mentioned reading (among others) Enid Blyton, Paul Gallico, and...