Hi
I was one the Ambos helping out at the Paris tent - I was there each day.
I did post in the Go Fest thread that it is always best to come early as we do run out of the different items.
At the start of each session plenty people came to see what they were eligible for and get a reward.
I know that I spent time in later part of each session saying sorry that the choice was limited. I understand the disappointment but there has to be a limit on items.