With no waiting in line, chain store's popular (4,1,4)
I believe the answer is:
like a shot
'with no waiting' is the definition.
(like a shot means immediately)
'line chain store's popular' is the wordplay.
'line' becomes 'l' (used when specifying particular lines from a poem).
'chain store's' becomes 'IKEA's' (IKEA is a chain of furniture shops).
'popular' becomes 'hot' (hot can mean popular or trendy).
'l'+'ikeas'+'hot'='LIKE A SHOT'
'in' acts as a link.
(Other definitions for like a shot that I've seen before include "Enjoy a nip" , "to demonstrate without hesitation" , "Lout" , "straightaway?" , "looking round, in field event?" .)