Hi there Jasmina,
Let me begin by saying "Congrats" on your engagement and upcoming wedding! Walt Disney World is the perfect place to begin your magical life together so I am so happy to hear you'll be headed there for your honeymoon!
I have been to the Grand Floridian Spa and it was an experience that was beyond amazing...unfortunately, this spa location is closed for refurbishment and is not scheduled to reopen until some time in 2013.
Taking that into consideration, I actually recommend the
Spa at Saratoga Springs Resort. Like the Grand Floridian Spa, this beautiful facility is operated by the renown Niki Bryan Spa so the offerings and prices will be comparable. The Spa at Saratoga Springs is very much like one you'd find in the Adirondack Mountains that are so famous for their healing and relaxing springs.
To make a reservation for one of the rejuvenating spa services such as my favorite, the Mystical Forest Therapy, call (407) 827-4455.
As far as price is concerned, Walt Disney World Spa prices are all very comparable to one another!
Best Wishes for a honeymoon that is magical and perfect in every way!
Amanda F.