Do you think Bonnie Wright and Daniel Radcliffe got the Harry/Ginny chemistry right in the movies?

Unfortunately, I don't think they really did. I think that's a large reason why people are fans of fanon pairings for both characters. It's probably a consequence of the actors being cast long before they'd have scenes interacting as a couple, and even before the book which confirms the pairing is released. The film scripting doesn't help, e.g. they altered their first halik to what's basically a repeat of Harry/Cho's first kiss.