Absolutely nowhere does it say you need to be a VCA Member to go. VCA members get priority mailing to be INVITED to VOI as it makes sense as Dodge has good access to the VCA membership listing (always current Viper owners), and historically, VCA members have been the most involved with the Viper community.
Also, getting to every Viper owner is a difficult task, as lots of times, as cars trade hands, records are not updated, etc.
So why do you think it's a members only event?