Possible Clues:

• Enticing party line
• Tavern enticement
• Part of a pub promotion, perhaps
• It's more open around Belgium taking ecstasy, as it's on the house
• Release one of those behind bars? Presumably, there'll be no charges for drinking this on premises after hours perhaps!
• Phrase used to advertise some mixers
• It's on the house coming to a head in the house on the house
• One on the house
• Does this refer to the drink you get get given around the bee?