I think this is a great app and an interesting idea, but one of the few projects where I could see the name being a problem for traction and success. A more generic name, which doesnt associate neccessarily with parties and drinking, would enable more people to take this app serious.
And well, like for all social apps, I really hope that more plattforms are very close on your roadmap =)
Why wasnt a web-based approach with the opportunity to compile down to hybrid-apps not an option?
Good luck anyway, hope to see you successful, since I really like the idea =)