TinaJ...I feel your pain. We did a 2 week cruise on Spirit in Nov. We had 2 formal nights. I had a nice dress....nothing fancy & white slacks with a semi-dressy blouse. Hubby has dress pants, two dress shirts, sport coat w/ tie. For the other nights for me was slacks, capris, "Hawaiian " print shirts & sun dresses. Hubby slacks with his "Jimmy Buffet" shirts. I would suggest for yourself if you tend to be cold natured a light weight sweater...mind was white..goes with anything. For the formal nights we saw everything from dressy dressy to casual. Please don't stress.....enjoy the cruise.