Honeymoon express perhaps may be held up (6,5)

I believe the answer is:

bridal train

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'be held up' is the definition.
I know nothing about this answer so I can't tell whether this works.

'honeymoon express perhaps' is the wordplay.
'honeymoon' becomes 'bridal' (I can't explain this - if you can you should believe this answer much more).
'express perhaps' becomes 'train' (express is a kind of train).
'bridal'+'train'='BRIDAL TRAIN'

'may' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.

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