here's what's always on my list for a quality GB:

ESSENTIAL

insatiable queen (duh)

h20

covers. lots of covers.

lube

music

OPTIONAL (all of the ESSENTIALS, plus):

her girlfriend to watch, join in or just fluff

range of adult beverages

restraints (what the queen wants, the queen gets)

camera

tripod

that's a starter. your list?

I'd add to your list of 'ESSENTIAL' requirements:

No fakes, flakes or wannabe's

Fun, honest, discreet and trustworthy participants

Recent STD tests

Show up on time

good additions sidnonymous.

i have certainly found that groups like these help to cut down on the flakes. the cancellation rate in my earlydays was way too fucking high.

not anymore.

this board doesn't allow editing my original post. so, to my OPTIONAL list i'll add:

Defibrillator

Defibrillator.  Ha!