Delays getting theatre seats (6)
I believe the answer is:
stalls
I believe this is a double definition.
'delays' is the first definition.
(stalling is a kind of delaying)
'theatre seats' is the second definition.
(I've seen this before)
'getting' acts as a link.
(Other definitions for stalls that I've seen before include "Seating on the ground floor of a theatre" , "Most expensive theatre seats" , "Posh seats in the theatre" , "Part of theatre" , "Cuts out in parterre?" .)