It's doing well, I just don't see much variation besides common merchandises and doujins. There's a group that is selling Touhou doujin music, another group producing Vocaloid songs, and that one yaoi circle, but that's about all, I haven't seen much variation (if at all) in the formats, compared to the variety of contents/fandoms each participant creates fanworks of. Speaking strictly in terms of selling VNs, do you see anyone selling them when you participate in the venues?
But then again, I agree that Indonesia perhaps is still a friendly country to sell doujin stuffs in such events, as compared to online/digitized products. Perhaps because we're not fully exposed to ways of buying things online? The international standard is to buy with Credit card, and the age range of Indonesian who are willing to buy these stuffs are considerably young = no means to acquire CC unless one asks parents. It's also why I haven't bought any commercial VNs no matter how much I want to. :/
Awareness! That's also one thing I've been thinking... How effective reaching out to high schools would be? There are high schools here with illustration extracurriculum or Japanesque appreciating community. I've been thinking to expose this event to them, but don't know a starting strategy.

We've been communicating with art communities here as well, but I'd like to tap to a wider scope of the market; the consumers, so to say, instead of the producers.
Contrary to full-scale events like AFA, though, I and my friends are starting with no sponsors. It is still a small scale events stuffs with specific niche (strictly doujin/indie label stuffs) instead of other cons with other appeals like bands/competitions/cosplays/guest stars etc. That's our main challenge, to gather the masses with this kind of content, I think.