-Travel is free for you and your family (spouse, partner, kids and parents) is free domestically in coach. First and business has a fee associated with it if you decide to utilize it. International will have some cost because you will pay and departure tax or fee (depending where you go).
-No spouse or kids then you can pick one travel companion that gets the same benefits.
-I can't remember how many buddy passes but they are plentiful to me. I never get enough takers to use them all. They aren't the best benefit unless that person has a lot of flexibility. One single bud is self-employed and has lots of cash. He travels every month and goes all over the world.
Hope this helps.