Our goal at Cruise Fever is simple, to help you have the best cruise vacation possible. With that being said, here are the biggest mistakes people make when taking a cruise on Carnival Cruise Line. Use these Carnival cruise tips wisely and feel free to add your own advice in the comment section below. Not Purchasing FTTF - What's FTTF? Faster to the Fun lets you skip lines during your cruise for a small fee. You receive priority boarding, priority tender tickets, priority disembarkation, a…