Convenience windows - erm no!

So this morning we again found our new (to us) S3 with all the windows down - and this time it was raining all night so the interior is quite wet, luckily (?) mostly passenger side. I have a fan convector in at the moment to warm and move the air around which I let the steam out often, and I'll take it for a run later with Aircon to dry a bit more, should I be doing anything else?  squirt WD40 anywhere? or just leave it to dry out? Needless to say I've turned off convenience closing .