Corks regularly seen around Fitzgerald's booze-filled rooms? (7)
I believe the answer is:
cellars
'rooms?' is the definition.
(I've seen this before)
'corks regularly seen around fitzgerald's' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'seen around' is an insertion indicator.
'fitzgerald' becomes 'Ella' (musician Ella Fitzgerald).
The alternating letters of 'corks' are 'crs'.
'crs' enclosing 'ella' is 'CELLARS'.
'booze-filled' is the link.
This may not be right. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for cellars that I've seen before include "Rooms below ground" , "Underground storage areas" .)