A man should open the door for a woman and see her in. Then he should walk around to the driver's side. When arrive, he should get out and walk round the car, open the door and help her out. This also applies when man and woman are taking a taxi. And a younger person should open door for an older person.
If you want to attract the attention of a waiter, never shout, bang table or snap your finers. Use eye contact when he looks over, or raise a hand. It is ok to ask if the service charge is included in the bill. A 10-15% of the bill is usual. When you are engaged in a conversation, you don't have to say 'thank you' when he clears the table.