The law says that certain seasonal employees are not covered by minimum wage but no onle lists what seasonal employment means. I work part-time(less than 40hrs/wk for a golf course as a ranger/cart attendant, are they required to pay me minimum wage since I am generally only employed March through October? Are lifeguards at a public pool covered by minimum wage?

Many firms have exceptions from min wages, and yes many of these could be exempt from min wage. But in most states, if not all of them, they all have their own min wage laws, But yes in general all of the jobs you listed could be exempt