1/ High heels will damage the grass.
High heel shoes are prohibited on synthetic grass lawn. High heels may poke into the synthetic grass and then weeds will grow from the hole that has been created by the heel which has penetrated the artificial grass.
2/ Will you stumble on fake grass when you are wearing the high heels?
Artificial grass tufting may lead to some circle yarns uncut, which is potential to stumble ladies with high heels. Indeed, MelodyGrass has strict quality control, we don't allow the circle yarns existing. Then you can see the situation is very rare.
However, ladies please wear flat-soled shoes on synthetic grass to avoid any damages towards artificial grass / synthetic grass.