Be really careful about the cookouts...I've heard of several who spent too much time at the grill, and not enough time studying.
Like Jerry said above, you are now in the "change-is-a-constant" mode...live it, love it, or leave it. Your experience at Atlas is what you make of it -- it can be the best job (minus FDX, and UPS, and even they have "issues") in the world for the guy (and family) with the right attitude.
If you fight the system, you'll be miserable with the training, OE, and line operations...just roll with it, and see they world, and fly some of the best equipment in the sky...with the best guys/gals in the business, who are motivated to get the job done.
Good luck, and welcome...