We just finished one of the overnight segments. I don't know if the crew tried to inform J pax that there were light bites but I woke up and went and asked the crew. They didn't offer to show me the menu but I had seen it online so I knew what to order. I didn't see that many pax eating (though a lot were sleeping).
I did not see the bar menu at the bar. I did ask at the bar about the smoothies (this was near the end of the flight ) and I was told that yes they had smoothies on the flights that serve breakfast.... which was the flight I was on!
So I agree that they don't do a good job on communicating what the J product offers. I also had to specifically ask for the children's stuffed animal (they were given the adult amenity kit). When they brought them over they brought a bunch and let them have them all but I don't understand why I had to ask (ages 7 and 9).
Overall it was a good experience but coming over here I knew what to ask.