at my moms we usually set dinner out in the kitchen and then everybody goes and gets some then we sit out in the livingroom and watch tv while we eat. sometimes if somebody goes to the trouble of actually cookin something, then we sit out in the diningroom with a set atble and everything. or sometimes we have "fend for yourself night" where if you're hungary you'd better get up and find something to eat.
edit:we usually eat around 8 or sometimes 9