6. Tulum, Mexico
Sure, you could go to just about any part of Mexico and find a steal of a deal. But why not hit up one of its most prized entities, Tulum, and skip the madness that is Cancun and Cozumel entirely? This way you won't be stuck braving a crowd of drunken Spring Breakers away from their parents for the first time during your one-on-one with your new spouse. Tulum, which is located just a half an hour outside of Cancun (making it an easy—and affordable—spot to reach), offers intimate luxury and privacy at a reasonable price tag.

The site of a walled Mayan city, Tulum rests on the Yucatan Peninsula and is well known for its ruins, which are among the most famous in the world. Additionally, it's home to many high-adrenaline activities like ziplining, cavern snorkeling, and skycycle canopy adventures—all of which can be enjoyed at Hidden Worlds Cenotes Park. The diving is quite popular, too, thanks to Tulum's position along the Mesoamerican Barrier Reef, the second largest reef in the world, and its underwater formations like cenotes and limestone sinkholes.

It's not as cheap as, say, Bali, but the 96-suite Blue Tulum Resort & Spa is the epitome of luxury and will only cost you $400 a night, all meals and drinks included (meaning slam those tequila shots as you deem necessary; it's not costing you anything extra). On top of that, you'll sleep in a five-star room outfitted in Mediterranean-Mexican style, with a marble bathroom, enormous balcony, large Jacuzzi, and views of the lush gardens. Rooms also boast wireless Internet, an iPod with music selection, plasma TV, DVD player with movie selection, rain showers, a pillow and soap menu, luxury bathrobes and slippers, aromatherapy amenities, and a complimentary mini-bar and bottle of champagne.