Where can I find those new beach pod chairs?
I want to see movies in the park and be comfortable, but not block anyone. These chairs don't have legs but they do support your back.

Do you mean chairs like these?
Around where I live they are used as stadium seats, or seats when sitting in a canoe. At the stadium or in a canoe there is no back support so these seats help a lot!

these seats can be found at other places too! (like sheels, and other sporting good stores)