I'm meeting friends in Orlando on Sunday to go to one of the amusement parks. But now the weather says 60% chance rain for that day. I have no idea what indoor activities there are in Orlando. Can anyone help with ideas?

Besides standing in line, DisneyQuest.

There are not a lot of inside daytime activities. I suggest getting ponchos and doing the parks. Many of the rides are indoors and the lines may be shorter. For night, think about tickets to Cirque du Soliel.

Rain didn't stop people from enjoying the Disney parks when I was there in June. Everyone just broke out the Mickey ponchos and kept on enjoying the park.

I never heard of DisneyQuest. What is it?

It's a giant video arcade extraordinaire! But I can't imagine how busy it must be when it rains!
There are all sorts of interactive "rides" where you basically "enter" the game through 3-D effects or virtual reality. You can also program your own roller coaster ride and then experience it in a cage.

DisneyQuest is an indoor game place in Downtown Disney. There are virtual reality games, animation activities, a bumper car/ball throwing ride and more. Think Gameworks on steroids. My 9 year old loved it. My 6 year old was overwhelmed by the crowd and noise.