I have done 3 of the GG events and they were amazing. That said, the GG desk is very disorganized. I did GG on two trips a year apart and there was no noticable improvement. I spent a total of about 6 hours on the phone for an event. (I got no confirmation, than wrong date confirmation, credit card charged than credited than charged, etc.)
I am an event planner by profession so was shocked this was so difficult. I also booked a private event for my family that was amazing. It was as good as any GG event. (We had a private area with seating for parade viewing and snacks).
The concept of GG is great I just wish they would get their act together.
If I can answer more specific questions, please feel free to PM or email me.
Sandy