I am a pretty new member here, but felt to share what I did yesterday.
I applied for the Nexus program which includes the Global entry and Nexus program
I flew in to YYZ (Toronto) for the appt. (used Avios miles, 18K biz class R/T)
Took about 20 minutes, and I had Global entry in my hands (it's not a physical card, only that I can use the GE machine from now on, the Nexus card to use the Nexus program will arrive in about 10 days).
I am not in the mood now for a long post, but i can certainly help you out if you need more detailed information.