Motoring organisation welcomes Pat to island in the Caribbean (5)

I believe the answer is:

aruba

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

'island in the caribbean' is the definition.
'aruba' can be an answer for 'island' (I've seen this before). I'm not sure about the 'in the caribbean' bit.

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for aruba that I've seen before include "Island resort in the Dutch Antilles" , "Caribbean island" .)

I've seen this clue in the Irish Times.

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