Unlimited travel for you, spouse, kids until 19 or 21 if in college, two parents on SWA and ability for same folks to purchase ID90s on tons of other carriers.
Companions get a limited number of segments per month if you go that route.
Buddy passes are earned by the “swag” program that gives you points for attendance and when the company meets goals for the year. They are good for 12 months and can travel one round trip or two one way segments on SWA. You are taxed on the imputed dollar value of the points earned. Each pass is ~$35-40 depending on your tax situation. You can also use the points for Rapid Rewards points and buy confirmed tickets or on $100 visa gift cards and buy tickets on other carriers.