Cabin crew.
Needed?
Oh yes, for safety and service.
However, I have found, as a wide-body Captain for a very long time, that it is indeed quite easy to 'get along'.
I say to the number one CC...'you are in charge in the cabin, however if there is anything that requires my assistance, don't hesitate to ask'.
This results in, for the FD crew...
The tea make properly, coffee, too.
The crew meals are served piping hot.
And, most important, a fine attitude from all in the cabin.
Couldn't be easier.