My dd and dniece saw Santa at his grotto on Tuesday morning, he was lovely. No queue either - I was really surprised at this, but for one, the park wasn't busy midweek when we were there, and two, Santas grotto is right at the back of Frontierland, next to the Chapparal Theatre and the train stop. In fact, the only time I saw more than about a dozen people waiting to see Santa, was right after the Mickeys Wonderland shows at the Chapparal Theatre.
Elaine