Southwest sent us 4 drink coupons. We have never ordered alcoholic beverages on a plane before. Is it correct etiquette to tip the stewardess/steward when they are served? I have never seen anyone tip for soda drinks or juice, so I'm not sure there is any difference if you were to request a beer when they take the beverage orders. I remember in the past I have seen them give the alcohol in a small bottle. Do they still do that or do they need to mix the drink which makes a difference? Thanks.