Just as a warning to anyone else who clicks the upgrade button too quickly you get entered straight into the queue and it doesn't look like there is anyway to c

Just as a warning to anyone else who clicks the upgrade button too quickly you get entered straight into the queue and it doesn't look like there is anyway to cancel after you've committed. My curiosity got the better of me and would have preferred to have planned a bit better for the downtime but am now 23 out of 28 in a queue and moving pretty fast...