One of our group came down with motion sickness, half-way thru the AVATAR IMAX 3D experience. I would put that more towards the heavily buttered popcorn and candy she ingested than the actual movie. A warning to those who are sensitive to such things. Other than that, worth every penny. Also, some feel that it's only worth seeing in 3D, but i have friends who have seen it in regular 2D and still say it's great.