Let me chime in:
I've had dinner with sps a couple of dozen times over the years. I haven't paid anything for the 'dinner' part, but i did pay for her dinner & drinks. Actually, there were several occasions where the girl either paid for my dinner or our drinks. There were also occasions when our entire 'date' did not include any 'intimacy', if you know what i mean. However, when it did include intimacy, the time spent in the bedroom 'for intimacy' was considered a business transaction.
One time, one of Mtl's top sps told me she was somewhat jealous that i had went out for brunch earlier that day with her sister & her best friend (who was also her boss). She told me that she wouldn't mind us getting together for dinner the next time we hooked up (for an encounter). I told her 'no problem' and i'm sure we'd have a great time. Two days later, i contacted her friend (her boss) and told her the young lady had suggested we put time aside for 'dinner' prior to a scheduled encounter. She got back to me and told me she had made a 4-hr 'dinner date' booking. She added she'd also be joining us since she enjoyed spending time with the both of us. She said she'd leave us alone after dinner in order for us to go back to my room for the 'fun' part. I didn't really know how to react & thanked her.
However, the next day, i called her and told her my plans had changed and i no longer had 4 hours of free time on the day of the 'date'. This wasn't true, of course. But i didn't feel right having to pay for 4 hours when i'd only be able to partake in 'intimacy' for about 2 hours. I have no problem paying for sex or services, but i have no interest in paying to watch someone having a great dinner in front of me. I find that paying for that dinner (and drinks) is plenty enough. So i told the girl's boss that i'd see the girl for 'intimacy' for two hours, but to cancel the dinner plans.
When the girl showed up the next day, she expressed her disappointment at the fact i had cancelled our dinner plans. I was truthful to her and explained my reasons. I had never paid anyone to watch having dinner in the past & i wasn't going to start now. I told her that next time, if she wanted, we could do the dinner thing on the side....that i was always willing & available to go out for dinner with a beautiful young woman.
This probably doesn't answer the thread starter's questions, but i felt adding my two cents (and experiences) might be of interest to those looking for ideas.