I just made an award booking for two tickets to Trinidad via Caracas on Taca and Aeropostal from Canada.
Taca allowed me to book directly with them but Aeropostal would not. I emailed GlobalPass and gave them my Taca Reference number and they proceeded to book the Aeropostal tickets for me and combined the tickets.
Overall, the service was fast, efficient and a good experience. No hassles.