For me I wonder if it is putting too much pressure on myself, I have booked in advance so I have to perform? I think you would have to plan some of things other posters have described well in advance, but you can often find options on the day. There is something very exciting about fucking more than one girl in a day, must be said.
I did 2 in a day recently, Sb meets so long ones, completely by my own mistakes, fucked up the meeting with one, called another, then the first gave me a ranting email, I politely replied and back on again, not something I would plan these days, but a real buzz all the same, maybe because it was not planned.
Certain things need planning, of course, but general punting it does not make sense to me to plan in advance, waking in a lousy mood, or getting lucky before the meet, or simply not feeling like a bunk up on the day, the pressure to perform and honor the booking make it not for me.