Letter to Disney perhaps, from a couple in person (7)

I believe the answer is:

kidneys

I'm a little stuck... Click here to teach me more about this clue!

'a couple in person' is the definition.
I can't tell whether this defines the answer.

'letter to disney perhaps' is the wordplay.
'letter' becomes 'k' ().
'perhaps' indicates an anagram.
'disney' anagrammed gives 'idneys'.
'k'+'idneys'='KIDNEYS'

'from' acts as a link.

Can you help me to learn more?

(Other definitions for kidneys that I've seen before include "offal" , "Abdominal organs" .)

I've seen this clue in the Evening Standard.

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