Hi Sarah:
Congratulations on your upcoming wedding. Without knowing your interests, it's hard to recommend a particular Park or ride to go to first, but it's hard to go wrong with the the classic and expansive 107 acre
Magic Kingdom. Since it's a honeymoon, I would make sure you book a reservation at a romantic restaurant. One suggestion is
California Grill atop the Contemporary Resort. California Grill features delicious California Fusion cooking and spectacular views of the Magic Kingdom and the Wishes fireworks show. Other great grown-up recommendations are
Le Cellier, a tasty steakhouse at Epcot's Canada Pavilion,
Jiko at Animal Kingdom Lodge, which serves dishes influenced by African, Indian, and Mediterranean cuisine, and
Victoria and Albert's, a winner year-after-year of the prestigious AAA Five Diamond award.
As for planning, the good news is that there are some great Disney vacation planning tools available right on Walt Disney World's website. After you've browsed around, come back to the moms panel to ask any specific questions.
Enjoy your planning.