(n.) One who revels.

alcoholic alcoholic addict bacchanal bacchanalian bibber big drunk boozer carouser chronic alcoholic chronic drunk contestant cutup devotee of Bacchus dipsomaniac drinker drunk drunkard frisker frolicker funmaker gamboler guzzler hard drinker heavy drinker imbiber inebriate lovepot merrymaker oenophilist pathological drinker playboy player pleasure-seeker pleasurer pleasurist pot companion problem drinker rollicker serious drinker shikker skylarker soaker social drinker sot swigger swiller thirsty soul tippler toper tosspot wassailer winebibber