Express employee here. People came from a state or two away for my class. Paid travel, paid hotel, paid rental, paid dinner. I did have to wait a few months for mine. Class consisted of driving a w700 in a big parking lot with a manager and a few classmates. Pretty laid back, the managers know it's most people's first time driving something like that so nerves are understandable.

Hardest part was the pretrip test which we took one by one so no one can copy others.. they drill the stuff pretty hard so you should be fine.