I've enjoyed separately the Toy Story movies many times and I was not disappointed with the experience Disney provided for seeing both in a double-feature. I think the only risk is one that comes with iconic movies audiences have seen before, in double-feature: certain audience members believe that gives them license to recite as if the rest of us haven't seen it before AND parents who used to see double-features as the norm don't realize the short span of their modern day child's attention. I hadn't watched 1 in the theatre originally, so that was a fun treat. Was the 3D successful? Not necessarily. But the experience was no less rewarding. And those who love the detail of Disney and Pixar will notice things they hadn't before.