The go card worked really well. However we made the mistake of thinking the 2 day pass included a Universal visit. I tried to get this upgraded and so contacted viator and whilst I received a quick response I had no idea what it meant or what I needed to do, so never got to see Universal studios in the end. Shame. Also, be aware that some/most of the attractions require you to get your own transport to the venue. Fine if you have hired a car. Not so good if you haven't!
Couldn't visit the Chinese Theatre as planned because there was a Premiere going on that day. Didn't even manage to see any celebrities by way of compensation!