About how far ahead do MOST appointments get scheduled

I think the more important question from the client’s perspective is, how far ahead does the provider we want to see book appointments, and does that fit our schedule?  

From what I’ve observed it’s hard to say how far ahead MOST appointments are booked because there’s a lot of variation. Some people like to book same day, even last minute, appointments. Some schedule a day or two in advance.  Some, like me, like to schedule out a couple weeks or more in advance—if the provider will do that.  

Touring escorts might be several weeks out.  By the week of their visit they might already be fully booked.  Locals usually have spots the week ahead.  You can always try a farther out date, but actually such planning often backfires.  I can only speculate why, but you'll be bumped by anything more "important" in their lives, including someone booking a longer date.

Some really want appointments to be scheduled a few days in advance or even longer if she's touring.  Others are fine with less advance notice, particularly if the client is a regular.  It's really depends on who you want to see.

locally: on average, most engagements are scheduled two (2) to three (3) weeks ahead of time. To mitigate rescheduling on my end for local engagements, I only open up my diary to bookings in 3 month increments (ex: March, April, May) once I've gone through my calendar and placed my personal tasks/engagements on it. As we progress through the current month (March), I'll start to open up dates in June.  

 
traveling/touring: on average touring engagements are usually scheduled at least a month ahead of time, sometimes earlier depending on the client. If it's something like exclusive date travel (aka a FMTY), then that's usually scheduled two to three months ahead of time but sometimes much longer (like 6 months ahead of time) or last minute (re: two days advance notice).