Dancing in club with some curaçao, very laid-back (4,2,1,8)

'dancing in club' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'with some curacao very laid-back' is the wordplay.
I cannot quite understand how this works, but
'with' could be 'cum' ('with' in Latin) and 'cum' is located in the answer.
'some' could be 'a' and 'a' is located in the answer.
'laid back' could be 'cool' (I've seen this in another clue) and 'cool' is located in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?