https://wccftech.com/final-fantasy-vii-remake-demo-all-chapter-1/

The Final Fantasy VII Remake demo allows players to experience the final game's first chapter, but it seems like the final game will still hold some surprises in its first hour.

According to The Completionist,, the demo doesn't feature everything the game's first chapter has to offer, as some content has been cut out for story related purpose.