Crossword Genius

As usual, king enjoying Cambs town's amenities? (9)

Ross

I believe the answer is:

routinely

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

'enjoying cambs town's amenities?' is the definition.
I can't tell whether this defines the answer.

'as usual king' is the wordplay.
'as usual' becomes 'routine' (I've seen this before).
'king' becomes 'ly' (I can't explain this - if you can you should believe this answer much more).
'routine'+'ly'='ROUTINELY'

Can you help me to learn more?

(Other definitions for routinely that I've seen before include "according to custom" , "typical fashion" , "As a matter of course" .)

I've seen this clue in The Independent.
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