Vacuous nightclubbers zip up entering live music events with cold drinks (9)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

( NS [ letters remaining in N IGHTCLUBBER S when the central letters IGHTCLUBBER are removed [gutted] + NIL (zero; nothing; zip [slang for nothing]) all reversed (up; down entry) and contained in (entering) GIGS (live music events)