I used to be a developer at Ticketmaster, and all I can say is kudos, great job!

It took TM/LN an absolutely ridiculous amount of time to build their own half-assed interactive seating charts, and yours beats all the big guys. Don't worry about them shamelessly copying your version—they literally won't be able to, even if they wanted to copy it wholesale, trust me(complicated data issues). :P

Incidentally, where'd you get your venue data? I always thought venue seating maps should be publicly available, like open street data.