Getting reservations at DLR is not nearly as difficult as it is for WDW, so it's not really necessary to try and be online right when the system rolls. If you do happen to try right on the 60-day mark, if you find there are no reservations available, it most likely means they haven't loaded that day into the system yet (rather than the restaurant being fully booked). Based on the PP, it sounds like the system has finally settled on 6:00 am (Pacific Time) as the time when the system rolls; when I last was checking, it was inconsistent (after midnight, but before 8:00 am).