We did the Alkali Flat Trail last fall during a full moon, during the day it's a different world. The trail is normally a 4.6 mile trail but we're going to add a bit to it making it a 6.5 mile hike. I'll gladly help organize a meeting place for the El Paso folks. The drive is about 1 hour so we should be at the park enterance by 9:30. There is a $3/person park enterance fee.
Alkali Flat Trail (http://www.nps.gov/whsa/planyourvisit/alkali-flat-trail.htm)