Even though this thread has been around for a while, I have not. So, I'll respond to the Original Topic:
I enjoy formal nights. I usually dress up in a Tuxedo or in Formal Clerics and enjoy the night. Not just the dinner ... the night. Cocktails with friends before dinner, dinner itself, a show afterwards, brandy and classical music in the Explorer's Lounge, perhaps a little dancing in the Ocean Bar ... it all depends upon my mood. For me, I just enjoy the ambiance and atmosphere that a Formal Night can bring when most people are "playing along."