If the ceremony is scheduled at five o'clock in the afternoon and a very dressy dinner will follow at six or seven o'clock, the men should still wear black tie. The pleats on a cummerbund should face upwards so they can catch any crumbs that might fall. The three types of lapels create different looks, but do not differ in formality. No, any formal accessories are appropriate, depending on the function. A white dinner jacket is always acceptable when worn on a cruise.
Formal shoes are patent leather shoes.
High glossed black leather shoes may be worn, but for a truly formal event, patent leather is recommended.