Depends on what effects you want to achieve. Pointing directly at the sun would usually give you an underexposed pic. Who wants to point at the sun anyway, makes no sense. But you don't have to avoid the sun, no worries. Depends on what effects you want to achieve, if you want those silhouette figures by the beach, with clearer backdrop then do borrow some light from the sun. If you dont care abt the backdrop or the sun, then use spot or sth and meter on the people. If you need to borrow the lights from the sun and have ur subject, then you can try to angle the sun behind their heads or body.
All in all, ignore the instruction and shoot as normal, because instructions usu always tells you to avoid electric shocks to the batteries or eat it (who on earth would want to shock the batteries?)