Well, I don't get the impression that the actors would be
completely averse to some kissing scenes...

So far we've got an "urgh, we don't have to kiss, do we?" from Rupert (
source), but when you think about it, Emma's reaction to the idea of hugging Harry in the CoS film was considerably more negative (
source), and I really think the actors have grown to be much more comfortable with on-set... erm...
intimacy since they started out. Plus, what would you expect a teenage guy to say to a reporter -- "ooh, lookin' forward to it!?"

That being said, I'm not thrilled to pieces with all the kissing scenes -- not because I think it's rough on the actors or I think it's inappropriate for the audience/rating or any of that -- but because I just didn't find all the cheesy romances particularly tasteful at all in HBP, and I'm not looking forward to seeing what I considered a disaster of a book (in terms of relationships) replicated on the big screen. My one hope is that Mike Newell will return for the sixth movie. I thought he did amazingly well with handling the Yule Ball in GoF (there was
huge potential to foul up the "tension" between Ron and Hermione in that one), and if anyone can tame the snogging and make it seem more romantic and less childish in HBP, he's the man.