>> 4. As soon as you sit down, open your serviette ("napkin") so it's folded in half and put it on your lap. Don't wait for the waiter to pick it up and hand it to you. If you leave the table before the end of the meal for any reason, place your serviette on the seat of your chair -- NOT on the table -- until you return
I have to disagree with part of this one. If you leave the table, IMO, you should NOT place the napkin in the seat of the chair. You have been sitting on that seat and IMO it would not be appropriate to place a napkin there. Place in on the arm or the chair, if you had one or on the back of the chair. Sanitary reasons. I am open for discussion on this one.