Anger erupting about closing of elegant wedding venue (6)
I believe the answer is:
gretna
'wedding venue' is the definition.
(people often used to elope to Gretna Green)
'anger erupting about closing of elegant' is the wordplay.
'erupting' indicates an anagram.
'about' is an insertion indicator.
'closing of' says to take the final letters.
The final letter of 'elegant' is 't'.
'anger' anagrammed gives 'grena'.
'grena' placed around 't' is 'GRETNA'.
(Other definitions for gretna that I've seen before include "... Green, for elopers" , "Green for eloping couples" , "border village" , "Scottish town" .)