Do headers and footers offer any advantages over adding the information within the worksheet cells?

Answer 1

Yes. You are guaranteed that the data will appear at the top and bottom of every page, which is what you want to do if you are using headers and footers. You can be assured of their positions on the printed page, which isn't always the case with worksheet cells. The size of the fonts may change or rows may be added or removed, which would change the position of the worksheet cells. If you wanted to put text onto every page, only using cells, you would have to put data in multiple times. With headers and footers, it only needs to be put in once to appear on every page. Headers and footers have special facilities such as being able to determine the number of the page or the name of the workbook or worksheet being printed, which can be added in so that they appear on every page.