> TG/TS, as opposed to CD/fetish, or simply "sleasy" as opposed to
> normal/hi-dollar? Or maybe, something else entirely?
"Mainstream-Alternative Night" is not an activity, but is kind of an umbrella term used for one of our evenings where several activities will be happening, some of them being "mainstream", in general-public venues, and some of them being "alternative", in either "safe" or GLBT-friendly venues.
The term comes from way back in DLV's history when, during our growing pains, one of the disagreements was the degree to which DLV was to be exposed to the general public. Mainstream-Alternative Night was named to show that there is (and always was) a desire for both hardcore general public activities as well as those activities which are either comfortable to those just coming out, or appropriate for those who wish to dress in outfits not appropriate for the general public.