I can't imagine anyone caring once the wranglers leave and lock the gate.
I've ridden there before light without any issues.....other than that wild burro's eyes lighting up just off the trail and scaring the bejebbees out of me.
About the burros, when I moved here two months ago I thought it was the craziest thing to see the signs that said to watch out for wild burros. I didin't ever think I would see one but sure enough I saw two while riding out at twilight a week ago at night. Wild burros, who'd have thought! In PHX it was usually javelina. Could smell them before we saw them. but no burros there