You make it sound like running the Gauntlet!! Groundschool is like anywhere else, you study you will pass. Sim training I found easier than my RJ training was. Sim training at EZ is pretty much handled by retired United 747 drivers, very easy to deal with and they will help you out (guess thats why its called training). You will run through a Nav class for plotting and carrying out oceanic crossings but the bulk of it is done on IOE. Groundschool is in McMinnville, sim is at UA in DEN. The 400 training is all done in DEN. Instructors great, very experienced and also do training for UPS and Airforce 1 aerial refuel training.
In groundschool blend in don't stick out is my main advice if you come aboard as a new hire!! As stated here by others, the schedules aren't for everyone and some of the destinations aren't either....but the flying is the funnest I've ever done!
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If you think that is fun you should come fly in Alaska!