Hi, Its been 5 long years since I last went to Universal and I'm so excited to be arriving on Monday!!! However last time I visited I had tickets in advance but this time I managed to be convinced by Thomas Cook to have vouchers. Now since reading about the long queues I'm really worried about finding the right place to change these vouchers into tickets even before we join the long queue for Hogwarts. Can anyone tell me where the Guest services is? Is it easy to find and is there anywhere else away from the crowds that I can change them? Thanks