My advice:
- You don’t know either of them > 1h
- You know one girl only > 1h or 90 min
- You know both of them already > 2h+ (budget permitting)
Now, if you want to reach legendary level / no financial constraints:
- Book them each for 10h spread throughout the month.
This way, you get to know them well enough to sense their vibe, preferences, and sexual orientation.
After this first stage, I book them both for an entire evening — minimum 6h to 12h.
It’s expensive, but the selection is so good that they basically become friends lol.
Now I’m planning the next step: a 2-day duo trip to a chalet or something.