The darkside is anything to the east of Sukhimvit rd.
A well known darkside beer bar is Noi's beer bar which is owned by a boardie on several pattaya boards who goes by the handle of Kolobos.
He has a webcam on his bar with fairly fast bandwith and music too.
Nois Beer Bar - Live Cam - Pattaya - Thailand - Live Webcam with Free Chat