I think it would be better to NOT let anyone register for an AL event using the Con registration process.
As I understand it, the Con won't allow that -- if you're using reserved Con space (rather than just claiming some open or 'free gaming' space), you have to use the Con's registration system. And AL is big enough that just trying to commandeer some 'open gaming' space wouldn't really work. Maybe the compromise is to use Warhorn for DM signup (since that's the biggest benefit of it, as far as I can see), and let players use the normal Con reg process to sign up for the same games.
Personally, I think AL is big enough, and organized enough, that it would do better to have its own AL-specific event. Something like the Pathfinder Society charity event held at Fantasy Flight's Game Center. SkålCon is a three-day PFS convention organized with War Horn. I would love to see something like that for Adventurer's League.
Are you volunteering to organize it? ; )
I'm only half-joking -- probably the biggest of the 'geek-friendly' cons in the Twin Cities is CONvergence, held over the Fourth of July weekend, and last year there was exactly one game of AL run there. I know this, because I went up to the gaming floor and registered to run that game after my second straight panel where the panelists praised 5e and encouraged the attendees to try it out. (I'm not sure what the AL situation is for CONvergence this year, as I'm not attending due to other commitments.)
AL as a whole is not really that organized at a convention level -- the 'parent' groups rely on motivated regional folks to get things moving and keep them on track. It helps to have personal relationships with the admin team, but it's not like Skerritt or Travis Goodall are coming to Minneapolis to organize a convention for us. The locals who do organizing tend to keep their focus on the FLGS rather than branching out into conventions -- in this, the local PFS folks have an advantage, as their Venture-folk seem more motivated to run things at any con they can get into.
I hate to be write anything negative because I know the volunteers work hard to put these together.
Agreed -- you don't want to feel like you're bashing the volunteers for doing what they can. At the same time, if your criticism is on-point and civil, I can't think of very many folks involved in the organizing who wouldn't want to know about it -- if they don't hear complaints, it's too easy to assume that something they assumed might be a problem actually isn't, because people would be complaining if it were.
It seems that there are challenges with the way Con of the North does its registration that doesn't mesh well with AL organized play.
As I understand it, CotN is run by a long-time group of volunteer organizers, and they deliberately spread the work of organizing the convention out over a long period of time to keep themselves sane. That's great for them, but it means that if you want to do something more organized than a simple one-table RPG, you've got to have it planned out well in advance to match their schedule, and our AL volunteers aren't always the best at putting together that kind of long-term plan.
If you've got project manager experience, you might be a better fit to help organize this stuff than you realize!
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Pauper