Cross-Channel trip reportedly says 'up yours' to those working the ferries! (5,6)
I believe the answer is:
booze cruise
'cross-channel trip' is the definition.
'reportedly says up yours to those working the ferries' is the wordplay.
I cannot quite see how this works, but
'reportedly' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
'up' could be 'is' (I've seen this in other clues) and 'is' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for booze cruise that I've seen before include "travel to avoid duty" , "cross channel shopping trip?" .)