Banks
Smash Hero
I think NE has a pretty solid grip on this.
When something is scheduled, people try not to interfere. they often even reschedule if they later find out something is on the same day.
when regional type things are ran (mass madness for example which doesn't have the space or time for both), brawl and melee are on seperate days on a sat and sun, and people can either go to one or get housing and go to both
on top of that, when experienced TO's who are used to running both do stuff (VLS 3 this weekend for example), people trust the venue is in order and both games coexist and the attendance doesn't suffer at all on a regional level just because it's "both games"
When something is scheduled, people try not to interfere. they often even reschedule if they later find out something is on the same day.
when regional type things are ran (mass madness for example which doesn't have the space or time for both), brawl and melee are on seperate days on a sat and sun, and people can either go to one or get housing and go to both
on top of that, when experienced TO's who are used to running both do stuff (VLS 3 this weekend for example), people trust the venue is in order and both games coexist and the attendance doesn't suffer at all on a regional level just because it's "both games"