Is your idea of togetherness a big ship with a party scene, lots of other people and an array of bars, clubs and restaurants ... or are you picturing the quieter, you-and-your-love-and-the-sea experience of a small ship? Make sure to choose the ship that's right for the two of you, and when it comes to romance, the atmosphere sets the tone.

Maybe your idea of romance involves hundreds of families splashing in the pool, but we suspect not. Couples seeking alone time will want to avoid big ships during school holiday and vacation periods, such as spring break anywhere and summertime in the Caribbean. (You are better off waiting until the fall when the family crowd is back in school). If you must travel during these peak family vacation periods, and you're looking for quiet, consider booking your trip on a line that doesn't allow children onboard.

Snuggling in a tight, windowless interior cabin may work for some but, if you can, this might be the moment to splurge on a balcony. In addition to light, you'll get more space and a feeling of being close to the sea. If you don't mind forgoing air conditioning you can keep the doors open and enjoy the sea sounds and breezes.

Families with young kids and seniors populate the early seating, and most couples who are traveling alone prefer to choose the late seating. Bonus: By dining late you can get in some extra pool time, or sneak in a romantic nap, before changing for the evening.

Lingering over breakfast in bed feels downright decadent, and on most ships you can even order up a pair of Mimosas with which to toast your love. Consider to staying in your bathrobes for dinner in your cabin, especially if you have a balcony or you're on a luxury ship that delivers meals course-by-course.

You may envision a bunch of just-the-two-of-you dinners, but whether you're eating in the main dining room or specialty restaurants, you'll want to reserve your table for two as soon as you can. (On many ships they go quickly!) We also recommend reserving outdoor tables when possible, since there's nothing quite like dining under a moonlit sky. Pre-plan any romantic experiences, including spa treatments, Champagne toasts in your cabin, and having your bed strewn with rose petals. In addition, before you leave home, load a tablet with your favorite romantic movies to watch together.

The main pool will no doubt be crowded on a sunny day. Instead, head to the adults-only pool or lounging area. If these spots are particularly cushy a fee may be involved, but we often think it's worth it. Or, as a complimentary option, seek out your ship's "hidden" open-deck areas, typically on an upper deck, fore, or aft. Just plan to get there early to snag a couple of deck chairs. or a sunbed that's made for two.