Truth is slightly different. Yes, males predominate and most enjoy a brewski or three. But women fish, too. So do kids and retirees. Charter prices are quoted per boat, not per person.
Charters generally take a maximum of six people.
Party boats can carry as many as 50. This could be important. Locals might think it's a pleasant day, but by your thermostat it's 10 degrees hotter than a blast furnace. Other boats keep half or more of what you reel in. Billfish should always be released.