With double room fee I'd rather jast do the girls separately back to back. Most times duos are a flop as there is no interaction between the girls. But there are exceptions as you have experienced I'm sure.
I donāt disagree but itās one of those things you gotta try at least onceā¦or twiceā¦or
Like you said, the key is finding the right girls. In the semi space, I highly doubt you will find two girls more open with each other than Crystal and Luna.
Bonus: if they arenāt that busy, very good chance you will get a break on price, especially if youāre a regular in good standing