Is formality your thing?

Carnival doesn't even try to be fancy — and that's just fine with the line's devoted fans. Greasy-good burgers by Food Network star Guy Fieri are a big hit with a crowd that would be less excited by, say, refined French cuisine. Yes, you can splurge on a craft cocktail or a decent massage at the spa, but don't come on board expecting a posh experience, even in the suites.