Honolulu offers free attractions like beaches and the Pearl Harbor Memorial, alongside budget accommodations with surfing perks. Affordable adventures abound in Coeur d'Alene, Idaho, with scenic hikes and lakeside activities in every season. Delight in Puerto Rico's vibrant culture and stunning beaches without a passport, enjoying boutique hotels and lively nightlife. When you think of a romantic vacation, you might imagine holding hands with your partner while wandering the alleyways of Santorini or dining by candlelight on the Amalfi Coast. But a couple's trip doesn't have to be so lavish, nor expensive. There are plenty of places to celebrate your love that you can visit on a modest budget. Whether you're planning your first getaway together, an anniversary trip , a honeymoon , or a sojourn "just because," you can save money on a couple's vacation by choosing less-popular destinations that have great free attractions.…