As much as I would love to set up an appointment a week or month later, as some ladies here prefer, I've learned the hard way that a million things can go wrong, and either party winds up cancelling. And for me getting cancelled isn't something I can reschedule, since I lead a very mobile and hectic life. Last time, I made plans that far in advance, I was cancelled, I lost my deposit, and was left scrambling for some action, that I went the No.5 and couldn't find a stool to sit on, and had a sub-par session at the first AMP I got to before they closed, then had to return back to the real world the next day.... I was very disappointed.
Now for my current situation... I'll be in Vancouver for the Nine Inch Nails concert on August 10th; and obviously once my family, relatives, and friends heard I was coming into town, they all wanted a piece of my time before and after the concert. So I figure that leaves me with about 5 hours the night before the concert to have for myself.....so what do I do for 5 hours in the evening of Aug 9th?... which leads to the OP's question:
With the limited time I will have, at most, I'd call/text first thing in the morning on the day of, or at least 2 to 3 hours notice.
Also, (and I probably get teased for this)... I make a list; a sort of 'black book' of providers who I've personally verified through this website, who are real, well reviewed, and offer all the services I like. Which is why I'm on PERB a lot/too much to keep in the know of things and be ready when I am let off my leash. I'll most likely not book a week/month/morning in advance, as suggested.... but just keep my list, so when I'm free from social obligations, I'll start running my finger down the list and it's going to be the first one responding getting my business.