I'm trying to figure out a way to answer this question patiently lol. No, you can't be confident that you won't be the 2nd or 3rd client of the day because someone is an indy. There's no way to know how high someone's volume is. It's true that a lot of providers choose to be indy because they don't want a really high volume of clients, but that's not the case for everyone.. We also can't control when clients are going to book us.
Personally, I don't like seeing more than one or two clients in a day. But once in a while, I don't have clients for a couple of days and then I get 3 legit inquiries for the same date. I'm going to see those 3 clients because I can't always predict how many bookings I'm going to have in a week.
I just think it's weird to book an escort and want to be her first client of the day at all cost unless you have hygiene concerns.. indies are probably less likely to see several clients
in a row and have plenty of time to wash properly, I know if I see more than one client in a day I try to make sure I have 1 hour to clean and recuperate between the sessions.. Other than that if you want to be her only client of the day, book her for several hours!