My only concern is that things like this tend to be rather hetero-centric. How do those of us with either non-standard genders or non-standard sexualities fit in?
I suggest those involved fill out info before hand regarding sexuality and gender.
What is your gender
Male
Female
FtM (Born female, identify as male)
MtF (Born male, identify as female)
Neutral gender identity, born male
Neutral gender identity, born female
Which of the following would you consider yourself attracted to?
Male
Female
FtM (Born female, identify as male)
MtF (Born male, identify as female)
Neutral gender identity, born male
Neutral gender identity, born female
Preferred sexual role
Strict Top
Strict Bottom
Switch
Top with men, bottom with women
Bottom with men, top with women
Top with men, switch with women
Switch with men, bottom with women
Bottom with men, Switch with women
This will take a bit more organizing between speed dates. You could make things easier simply by printing this info on people's name tag, to save confusion when mismatched dates happen.