If her ad states 24-7, then you are allowed to call whenever you so please. I use to be 24-7, an would take appointments until 5am, sleep for a few hours, & then be back up at 11am... I'm still a night owl, but unfortunately have found that the after midnight crowd tend to be drunk, high, not so nice, etc, so have resorted to having set hours. You'll be fine. & if she doesn't answer, well, try again later, or try another lady that advertises 24-7

And you are correct about the no traffic aspect.. it is wonderful, & usually so quiet that time of night

I've called as late as 10 or 11pm when my original plans fell through.  I only do it based on current BP or, back in the day, CL ads that indicate the girl is "on" and looking for business.  I would never do it based on a website or old ad.

I have scheduled a 4 AM appointment before. Does that count?

even if its 24/7 ad i try to only call providers that posted their add within ~3 hours or so.  Even if she's available do you really want a session with someone who was sleeping before your call woke them up?

I rest during early morning hours so late night works great for me. Most book in advance so I'm able to adjust my sleeping schedule if needed. Vegas never sleeps so being available 24/7 is not unusual.

Usually not the best because both of us are tired but there are some ladies who do it.

I called a girl at 4am one night 10 years ago in San Antonio. She was kind of pissed; i refrenced her ad and she was like, "well I'm not going to make a date at 4 in the morning". I don't think that her ad said 24/7.