I'll be logging in once it opens as well. I'm so excited. I've been next to useless at work these last few days looking at character builds and stuff... lol.
For anyone that hasn't been part of the opening of a MMO before just be aware that they are often fairly rocky at first. Login servers go haywire, inventory systems lag out, etc. I've been in every major Western MMO on opening day (including any early access ones like now) and I don't recall even one of them not having one or two annoyances. And most of them have had very huge annoyances the first few days.
Now the most recent MMO releases seem to be getting better and better, so hopefully ESO will do fine. :) Just don't feel too bummed out, or get all "I paid money for THIS crappy service??" if the launch isn't smooth as silk.
Hope for the best, expect the worst. ;)