Note that when you register at the main site to become eligible to get pre-sale tickets, it appears you must return to your email right away to confirm your email address. I understood I had successfully registered last night (in anticipation of the Milwaukee pre-sale) based on the web site banner stating "Registration Successful." I was not prompted to check my email to confirm my registration. Unfortunately, I discovered a request to confirm my email in my inbox this morning, and I believe I confirmed my email address too late to be eligible for the Milwaukee pre-sale. I will try for Milwaukee pre-sale tickets again, but it appears I am out of luck, even though I thought I had registered successfully several hours before the deadline.