I am cruising on the Inspiration this fall. What I need to know is, about the formal nights. Are they worth renting a tux for about $100, or wearing the wrinkled dark suit that I squeezed into my suitcase, along with the approiate shoes and shirt and tie that I will probably wear just once ??? Is it a special menu ? What do you think about choosing to skip the fancy night and eat at the Brasserie Bar and Grill that night.