The most common and most likely answer to this crossword clue is the 10 letter word SOMMELIERS
S
O
M
M
E
L
I
E
R
S
Buddy explains!
The straight part
We know that "Wine service managers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wine service managers = sommeliers.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SOMMELIERS mean?
SOMMELIERS noun- The member of staff at a restaurant who keeps the wine cellar and advises the guests on a choice of wines; a wine steward / stewardess, a wine waiter / waitress / server.