An air dryer might cause about 0.3 bar pressure drop in your compressed air system. Basically this means that you have to run your compressor at a higher pressure. This of course will result in more energy consumption by your compressor.
Dressing for a gala event is rather simple. It is typically a formal wear occasion. For men, that equates to a tuxedo or at the very least a suit and tie. For women, formal wear is typically a long gown with high heels, matching accessories and jewelry.
Guys will look sharp at a semiformal event in nice, tailored suits that would be appropriate in a business formal setting. Stick to darker shades and add a splash of color with a dressy striped shirt or a colorful but tasteful tie. Dark leather dress shoes and dark socks complete the look.