It wasn't site wide, but rather just select hotels.
While I know each hotel chain has their own unique terms and conditions for these BRG programs, I was just surprised how restrictive Kimpton came across to me based on past experience with other programs. For example, a website having a one-day 5% off sale netted me a successful claim with Intercontinental a few months ago. From my experience, other chains don't seem to get hung up with semantics surrounding the term "promotion". In the case w/Intercontinental, the fact a 3rd party website was selling rooms at a 5% discount one day was enough for them to acknowledge and accept the fact their website wasn't the cheapest place to buy a room at their property. That, along with my meeting the rest of their criteria (same room type, cancel policy, etc).
It appears no two BRG programs are alike!