❓ "Date of entry" should be actual arrival date?

Q. Do I have to fill in the actual arriving date in the " date of entry"?

A. No, you don't. Just the "expected" date to entry will be necessary to input there. It is no problem if your actual arriving date will be different from the date inputted on the application.
In case the school input the date, it already has been filled. If the date already filled is seems appropriate, please leave it as it is.