COPA's interview process is based on a European Pilot assessment, you can find it online, nothing you can prepare for. It is a basic pilot knowledge and intelligence test. This is a Pass/Fail, next you have an interview, COPA is looking for Captains that will be able to handle low time F/O's, also you need to demonstrate the ability to mentor a F/O to become a Captain. You have to be able to fit in with the Latin community, and be willing to learn Spanish. Although English is the recognized aviation language Spanish is a Must, if you do not know it you must show that you are eager to learn. You can not expect US training tempo, it is slow here, but that is just how it is. The Sim check is not completely about demonstrating you skill as a pilot, it is also about how you interact in the cockpit. COPA is big on briefings.