@Winston ***********
I disagree with you, its not automatically looking for trouble if I ask an agent "Hey can I fast track this application, do I need to wait a few hours if I want to do same day re-entry, do immigration officers have shift do they change after few hours, do I need to book a hotel room even if I am just gonna return back immediately, do I need to step outside the airport, etc etc".
Its not about needing an agent. Its about doing things the right way. Agents handle these things everyday and I trust they know the situation better than I, a working individual with a full time job and not enough time on hand to look up everything.