Yeah was up by 4:15 - out the door by 4:50.... Got to the trail head around 5:35... First Color started hitting around 6:40 even though sunrise wasn't technically until 7:10
It was just me and one other photographer for about 5-10 minutes, and then BAM: Crowds.... I think by the time sunrise actually hit, there was easily 100-150 people there...
Luckily Arches still has off the beaten path unknown areas for peace/quiet/solitude n sanity 
TRhoads wrote in post #19288069
you have to get up extra early to be up there for sunrise...or just stay out really late!