Hello Tanya and thanks for visiting the Disney Parks Moms Panel with such a wonderful question.
What a truly thoughtful daughter-in-law you are to create such a delightful and meaningful gift to present to your dear in-laws whilst you all visit the
Magic Kingdom Park together on the occasion of their 50th anniversary; I'm quite sure they'll be so very touched by your kindness on their golden milestone occasion.
I love that you also plan to capture what's sure to be an unforgettable moment with photos, videos and perhaps even a Facebook Live video which is awesome! I also thought you may wish to consider purchasing
Memory Maker and include the talents of a photographer from
Disney's PhotoPass Service who can capture your families picture-perfect moment with a little additional pixie dusted magic!
I believe I do have a solution for you of where to store your precious book both before and after its starring role! The self-service keyless
Locker Rentals at each Disney Theme Park provide a convenient and safe storage space in various sizes for all those items Guests don't wish to carry around all day long for a one-time daily charge.
Wishing you an extra magical upcoming visit to the wonder of Walt Disney World Resort.
Have a great Disney day ~ Jane