Sylvie, your suggestion "perhaps only one night of the weekend be a private party with loud boom boom music.." - are you serious? Whether it's a WI meeting with cucumber sarnies or a 1993 Acid House reunion - it's a function room that can be hired privately, therefore their clientelle can do whatever the hell they want to do. Yes, DH may need to rethink their sound proofing and yes, at some point the management should submit/post proof of their license to reassure you all (although I have a feeling they might have better things to be getting on with than reading this forum), but you cannot dictate to DH how to run their business!