Corks regularly seen around Fitzgerald's booze-filled rooms? (7)

I believe the answer is:

cellars

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'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' means one lot of letters goes inside another.
'fitzgerald' becomes 'Ella' (musician Ella Fitzgerald).
The alternate letters of 'corks' are 'crs'.
'crs' going around 'ella' is 'CELLARS'.

'booze-filled' is the link.
I am not very happy about this link. It may belong to 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" .)

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