I started practicing earlier this week in anticipation of our August trip (yes, I am obsessive). Tuesday I was successful (or at least I got the "is everybody in the park?" screen, which I assume means I would have gotten a BG had we been in the park. Wednesday I decided to test the "don't ever waste precious milliseconds hitting 'select all' for your party" warning and it was indeed true, I got the red box of doom. Today, successful again. Using time.gov, I've found that I should take just a millisecond after the clock hits 6:59 to pull down and refresh to get the join screen. Hitting it right at 6:59 is a hair too early. (I was still successful after refreshing again, but every fraction of a second helps...) Fortunately there are still 156 more days (but who's counting?) to practice...