Honestly this seems just like more of a FA whining then helpful tips for the customer. This is the only one that is helpful:

9. If you’re traveling overseas, do yourself a favor and bring a pen.

You would not believe how many people travel without one, and you need one to fill out the immigration forms. I carry some, but I can’t carry 200.

I always try to bring my own pen, since I'd rather get it filled out ASAP and go back to what I was doing rather then waiting after I get off the flight or having to try and get a pen from a FA.