For the addresses - you could use the 'Auto Correct' feature - add in the addresses and a code that would get replaced. Not sure if this will allow line returns though - If NOT, then I would suggest a program called
Short Keys. There is a free lite version. You set an activation sequence, then code for the replacement, then as much text as you wish (I find that if you use Notepad to create the text, you can use tabs and line returns, then copy and paste.). A Good ap, that then can be used in any software.
For the Watermark - make an image, or use Word Art, then paste it into the Header and adjust brightness and Contrast.