No problems picking up our tickets. Had a great day at the studios. Good time to visit as there were no huge queues.
I got my ticket quite fast and easily in exchange for the voucher.
However, due to a changed flight schedule (by the airline!) I would have preferred to cancel the booking, which for no obvious reason was declined by viator. A simple ticket to an amusement park (open every day!) is not an 'event' ticket. It does not require any special arrangements by the operator.
I would recommend not to book regular tickets in advance.
Was not collected from hotel. Had to make my own way to bus terminal but bus driver to Unversal was excellent.