NOT TRUE! You can wear anything text taken from and copyright of projcetbritain.com
I wouldn't know. We do visit friends and family though.
True. They will think you are boring if you do. It is best to keep work matters at work
I would arrive on time. If my guest arrived early I might not be ready.
Toasts (when glasses are raised and some makes a short speech) are usually only given at special occasions like formal dinners, birthdays and weddings. text taken from and copyright of projcetbritain.com
Guests at a formal dinner may not light a cigarette until after the Queens Toast or until the host gives permission. At a very formal dinner you should not leave the table until after the toast.
Wrong They should be placed at 12 o clock (12:00)
Not necessarily true but if you do it means that you have had enough to eat. Leave too much and your host will think you hated their food. text taken from and copyright of projcetbritain.com
Can be true but if the party went on too long I would make an excuse and leave.
Never heard of this one. If the host folds his napkin and puts it on the table it means he has finished eating. Other people may still be eating.
Not necessarily true, depends on the host. They may want to chat more.
Yes, that is always a lovely thing to do
If you go to someone's house for a meal, take a bottle of wine or some flowers for the lady of the house