Morning huddle varies, but is generally held where ever they need something smart huddled.
Evening huddle happens about 75% of the time. When it happens, it is generally done in infant gondolas to do the zone. As a GSA, even if I am available (rare as there are usually breaks to be covered), I will no longer go to that one...I've gone too many times where they call huddle, have us start zoning, and then at the end of the zone say, "oh, I didn't have anything to say, thanks for coming!" As a GSA, I am exempt from the smart part of huddle, so I don't appreciate being tricked into it, so I stopped going. If it isn't held in the infant gondolas, it's in the TSC...I will go to that one as I can't be tricked into zoning.