Colourful festival at noisy bar is all-inclusive (8)
I believe the answer is:
holistic
'inclusive' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for holistic that I've seen before include "Treating the whole not just the diseased part" , "(Of medicine) treating the patient as a whole, physically and psychologically" , "Kind of treatment for the whole person and not just symptoms" , "Type of medicine" , "Complete (medicine)" .)