For fans . . .

Don't hog the TV

Plan ahead - trade a long TV soccer session for a family day out, have a TV-free zone every day, work out what's "unmissable" and what's not, (e.g. you could probably live without all matches involving Bulgaria)

Don't neglect domestic chores

Don't drink too much. Show some interest in your partner

For non-fans

Don't hog the TV.

Don't stand in front of the TV to make a point

Do try watching a match or two with him/her; it might be funnier than you imagine

Do keep to yourself your view that it's utterly futile to shout at people who can't hear you and are paid too much to be bothered anyway . . .