Took this off a website, but it has some really good ideas. I love the hot air balloon idea!!!
15 Romantic Things to Do at the Parks
Not everything at Disney World involves children. Let the kids have fun at one of Disney's resort kids' clubs or get a babysitter (available for a fee through Kid's Nite Out) and enjoy some private time, just the two of you.
1. Dress up and make dinner a very special occasion at the truly grand Victoria & Albert's restaurant in the Grand Floridian. Remember to make a reservation three months in advance.
2. Share expertly crafted sushi before dinner and perfectly paired wines at the California Grill on the top floor of Disney's Contemporary Resort. Watch the sun set over the Seven Seas Lagoon, or see the Magic Kingdom fireworks from your seat or the restaurant's outdoor viewing spot.
3. Rent a boat for a cruise on the Seven Seas Lagoon or the waterways leading to it. Bring champagne and glasses.
4. Take a nighttime whirl on Cinderella's Golden Carrousel in Fantasyland. Sparkling lights make it magical.
5. Have your picture taken and grab a kiss in the heart-shaped gazebo in the back of Minnie's Country House.
6. Plan a day of couples pampering at the Grand Floridian Spa.
7. Buy a faux diamond ring at the Emporium on Main Street in the Magic Kingdom. Propose to your sweetheart at your favorite spot in the World.
8. Hold hands and share the wonder of the surreal Cirque du Soleil show La Nouba at Downtown Disney West Side.
9. Sit by the fountain in front of Epcot's France pavilion and share a pastry and café au lait.
10. Have a drink at the cozy Crew's Cup Lounge in the Yacht Club hotel.
11. Stroll the BoardWalk. Play croquet. Watch IllumiNations from the bridge to the Yacht and Beach Club. Then boogie at the Atlantic Dance Hall.
12. Tie the knot all over again at the Wedding Pavilion or during an intimate ceremony on one of Disney's beaches. Invite Mickey and Minnie to the reception.
13. Rent a hot-air balloon for a magical tour of Walt Disney World.
14. Take a golf lesson with one of Disney's pros, then enjoy time together on one of the resort's lushly landscaped courses.
15. Enjoy a British lager outside at Epcot's Rose & Crown Pub—a perfect IllumiNations viewing spot. Book ahead and ask for a table with a view..
Info from
http://www.fodors.com/world/north-america/usa/florida/walt-disney-world-orlando/feature_30012.html