Reason being, each provider does it differently.  A lot depends on what time you start the date.  Some, I think many from reading reviews, will make it a 12 hr date.  I think most would start at 6PM or later.

Sorry, I can't tell my experiences due to time because it's really a YMMV thing, how well you get along.  Expect to let her get a decent sleep time.  How much sex?  Lots, def more than once, for the money you pay for it, it better be more.  How much really depends on the two of you.

I had fun on my overnighters.  I don't do them very often, but when I do them, it's fun.

Swim

My experience,

In room around 8pm, she left 10 am.
Had a good time, ordered supper in room, got to know each other a little.
She brought some awesome smelling candles and good music.
Had sex for a couple of hours. Played cards, drank some booze, til 3 am.
Ate her pussy and some breakfast next morning. She gave me a pair of her sweet smelling undies  (worn )..then she left.
YMMV, when it comes to sex. ( i'm 55 ) and was happy with amount of sex i had.


ps, i also got to know her a little via pm's, before i decided on an overnite.

An overnight date should be with someone you have seen before, preferable more than once, not the first date with her.  If you have not seen her, how do you know you will click?  If you don't, you will have spent a lot of money for a not-so-enjoyable night.

Swim

I've done many overnighters.

Are you taking her to dinner ? Then you should plan on 6 or 7pm as your begin time. Are you going to do anything after that, a comedy club, a movie, go to a club have a few drinks, dance...these are all the things you need to plan. An overnighter isn't a night of sex. It is an entire experience with the lady. After you have enjoyed your evening out then you would go back to wherever the incall/outcall is and get comfortable together. She will take the lead, I can assure you, on what is to come next. You sleep when you both are ready to sleep. It isn't a set time. Usually doing it more than once is allowed if you are up to it. The time she leaves will all depend on her schedule.