I've never paid more for overnight than the amount I would pay for a regular date that includes BCD. I encourage overnight ("Bring your overnight bag. "   when my schedule permits. Channeling Tomcat, I don't have the drive I once did. Multiple pops take at least two hours and that's if she's very hot and I haven't drunk very much. So overnights work well because I regain the desire and ability to perform again in the morning. One girl, a late sleeper, even said I had converted her to a lover of morning sex.

 
Regarding trips, each time I've brought a girl on a trip (meaning, she flies to whatever city I'm visiting), it's usually been just one night. Occasionally two nights if I know her well. Still, I've only paid the regular date rate plus airfare. Maybe I'm cheap? They never asked and they never seemed put off by the regular amount since they saw me again.