Yes, its required, carry your identification cards such as a driving license or voter ID along with a passport size photograph, a medical certificate ensuring your trekking fitness and a certificate of disclaimer ensuring that your submission to participate in this trek is voluntary. The destination for trekking falls within the Valley of Flowers National Park, and the mandatory entry fee pass must be purchased at the checkpoint of the Forest Service. Please plan your trip as camping inside is not allowed and is only open from 6 AM until 6 PM. 3 PM is the last entrance to the heritage site to preserve its demureness.