TER General Board
nuff said 
xo
Nicole
that is very much a possibility 
Lina
work on weekends , it is true .
I would try traveling ladies while you are traveling .They are more apt to take a weekend or late evening appointment .Being as they are also out of town and most likely not with friends or family at that time.They do not tend to blow off appointments at odd times because their expenses are so much more than that of a local girl. Also as was already mentioned try to plan ahead Good luck to you ,Kendall
I agree with many other posts.
The BEST way to get this accommodated is to give as much advance notice as possible (personally, weekends are often easier since I don't have class, but it varies. I also find that no matter what type of day a gent is looking to meet with me, advance notice, at least as a part time student providing finishing up my college degree, advance notice always helps.) So that is the best I can give ya.
I would also suggest reading her site- I think if I were a man/hobbyist I would get frustrated with the lack of detail on some sites (but on the other hand, some gents probably get frustrated with the enormous amount of time and detail I put into my own site haha- that said, re-entering the providing world, it is still under contruction so it is not too overwhelming at the moment but still addresses the basics- for example, for me, I generally am too tired after 8 pm to be at my best and try not to book then- thus I state this!!) But if a gal clearly lists her availability via written text or a calendar on her website, and weekends are not marked available, you have your answer right there and I assume you would not then try to book for a weekend despite already knowing she's not free
As for the why part of the question:
-Many providers are in school or work other non hobby related jobs. Weekends are seen (as maybe you too can relate to) as personal time, and often for young single females, it is the time to go to dance clubs, bars, dinner, movie nights, etc. with girlfriends (depending on your preferred age and demographic of provider of course, though that is not set in stone either).
-For a working single mom or co-parenting/divorced mom, that is often "family time, especially a slightly older mama with school aged children who are in school all day M-F! That may be the only real time she gets with them (aside from after school when many interactions likely consist of driving to and from extra-curriculars, cooking and cleaning for them, bathing, and putting them to bed). So I can totally empathize and understand that.
Finally, I was a bar-tender for a short time, and obviously, the bar times when you make the most tips are weekend evenings and nights, so even if she is single and doesn't have a family, if her other job happens to be bar tending or waitressing at such an establishment, these are the shifts she will likely be assigned to or desire.
Just a few things I can think of, everyone has their own reasons and schedules. Like I said, for me personally, weekday or weekend, late nights just don't work well as I do not want to be tired, I want to be at my best, and need my rest to stay healthy. But everyone is different.
Try checking for providers who advertise weekend availability, and if you are unsure or know she does at least occasionally take weekend appointments, contact in advance so she can arrange her work or custody or social outings for your date!
Hope some of this helps and that you have better luck with scheduling that meets both your needs and your chosen provider's. Happy hobbying and stay safe!~
XoXo
Marea
Oh and one more thing- advance notice does very little if you do not give her advance information for screening. She is not likely to want to rearrange her schedule on a gamble if you don't provide that, and the more time we ladies have to reach other (also busy) ladies for refs, the better She will be more likely to arrange her schedule to accommodate you if you provide all the requested info, and are courteous and thorough in your initial contact (but you probably knew that 
See my blog post on my site also, Tips for Initial Contact with a Provider, to make you come across as a respectable gent who has done his research, and make her more likely, even if she might have plans or not always take weekend dates, to go out of her way for you. Have fun!!!