Heard from a source from the production- it actually does have strings. Each of the 4 corners of the carpet has string/rope attached to it, but is using a new technology that Disney has developed. Think of a jumprope: if you spin it quickly enough, it seems to be invisible or at least harder to see. The 4 strings are on a motor that makes them spin at a high speed making it hard to see with the human eye. They are there, though! Hope this helped.