There's no question that you will see Up, the sublime Pixar animation about a septuagenarian grouch and a pesky kid who sail to the Orinoco in a Victorian house hoisted by a bouquet of helium balloons. The only questions are when and how.
When is up to you. How is a more delicate matter. Should you see it in 3-D? I chose not to. For me, while 3-D glasses deepen spatial perspectives, they wash out the evocative colors of animated films. (For this reason, I vastly preferred Coraline in its "flat," or 2-D version, than in 3-D glasses.) Many others have experienced the same problem. Although Roger Ebert is agnostic about the preferable format, here's what he has to say:
"But let me gently mention one of the film's qualities that is likely to be diminished by 3D: Its subtle and beautiful color palette. Up, like Finding Nemo, Toy Story, Shrek and The Lion King, uses colors in a way particularly suited to its content."
While the so-called "Pixar guys" -- John Lasseter, Andrew Stanton, Brad Bird and Pete Docter -- are avowed fans of the legendary Japanese anime master Hayao Miyazaki, Up is the first Pixar movie to approximate the watercolor transparency of Miyazaki's images.