Why would they pick the weekend of the San Diego Comic-Con for this promotion? Wouldn't it be more prudent to pick a weekend when nothing much was going on? Comic-Con is by far the largest event of this type of the year. I'm not saying it would affect COH/V's turnout by much but this con attracts nearly 200,000 people.
My opinion (and it's just that), hold special events for COH/V at times when peoples attention is not being redirected towards other events.