Unless you make it known to cabin crew that it is your honeymoon, they will have no idea. A note in your booking will most likely not be read by anyone. I'm pretty sure the passenger manifest doesn't list these notes, its only displayed when the full booking is opened by the likes of checkin staff.
I would not expect anything, but have a good holiday.
It depends on how the note is put into the PNR. If it is put in as an OSI then it will appear on the PNL. Also, some types of SSR's also appear on the PNL, this is how cabin crew are made aware of certain information (example, "Passenger is deaf
.
Dave