According to the OC Register’s Around Disney blog:
The Mickey’s Fun Wheel ride in Disney’s California Adventure is open for business.
Disney Spokesman John McClintock said this week’s opening was a “soft” one, so the ride may be in and out of service through the week as cast members tweak the operations.
The retrofitting of the Ferris wheel in DCA with a big, vintage Mickey Mouse Face to replace the sun that had originally been there is part of the $1 billion California Adventure expansion.
The ride will have a private grand-opening party for cast members early next week, and will be in full service by mid-week, McClintock said.