You can call member services and request a theme park view. They will put your request on your reservation. When you check in, remind them that you requested a theme park view. If you haven't already been assigned a room with that view, they will see if they have one. You may not have a full view of CA so don't get disappointed with the view you have. I have had views of the Tower of Terror, Silly Symphony Swings and the Ferris Wheel(WOC area) on separate occasions when I have requested a theme park view at GCV.