Definitely. My rules with couples are
24+ hours notice
speak with all parties involved
1.5 hour minimum booking (cause it always drags at an hour, as usually they want to talk and get comfortless for a bit, and then get super into it and always want to go a second time)
?100 over normal rate
I find this cuts out time wasters, fakes, and couples where the woman is uncomfortable. And fuck yes I charge more. They'e more physically, women can be very demanding, and all the psychological bullshit of making sure the wife/gf doesn't feel insecure but yet making sure the husband doesn't feel ignored... not worth it unless I have the extra money!