DD13 and I are going tonight, and it is currently pouring. I know she's not going to let me out of going, plus I left my credit card there the other night, so have to go back anyway. I'm assuming that most rides that are totally inside are unaffected, but will all of the roller coasters, etc. be closed, too?

What if it rains on and off. Do they open and close the ride depending, or just leave it closed and be done with it? TIA!

I can't speak for any rides outside of Fantasyland and Toontown, but Alice, Tea Cups, and Gadget's Go Coaster all close in the rain. They will close pretty much as soon as it starts raining and stay closed until the rain stops and the ride path has been dried enough to begin operation again.