Surely not the first time this topic is mentioned, sorry.
Flying with flight following with final destination a class "D" airport.
When the last ATC ask me to switch to the K*** tower (arrival airport), is the tower aware of who I am, my position and that I'm inbound to land, or do I have to go for the 4 "W" at the first contact ?
You can never assume they know about you. If they have radar, they might. But it is never a given. As the other poster said, the 4 "W" approach is always safe!