I've been on the Soarin' in California. You are seated ten across on seats that look like a ski lift, but are supposed to give the feel of a hang glider. You are lifted maybe 30 feet off the ground, and even in the dark of the theater, given the feeling of flying. Then you burst through the clouds and are Soarin' Over California as it flies by on an IMAX screen.
You'll fly over mountains and coastline and a river (you'll smell pine here, kind of like how you smell pie in Philharmagic). You'll fly over Pebble Beach, the Golden Gate bridge and several other sites.
It really is fun and is almost as breathtaking Mission Space. Only a serious grump or those who get easily motion sick could not have fun.