Yes.
Ben Riddle is not a character in the Harry Potter series and Rose Weasley was still alive at the end of the series.
Yes. They get married.
Yes they are. Till the very end.
Yes. Ginny and Harry still had feelings for each other and ended up married.
In the end, Harry Potter lives and Lord Voldemort dies. Also, from the main characters Hermione Granger and Ron Weasly live too. ----------------------------------------------------------------------------------------------------- After a long battle, Harry lives and Voldemort dies. Harry ends up having children with Ginny Weasley. And Hermione and Ron have children.
No, he is still alive.
Harry
Yes, Ginny and Harry later got married and had three children.
No, he died in Harry Potter and the Order of the Phoenix.
No. Daniel Radcliffe is still alive.
Well, he is not exactly a hero, but still very likable.
Rupert Grint will still play him but will be made to look older.