Hi!
I would do:
A red rose at each place setting. In fact, red roses everywhere.
Possibly your centerpieces could incorporate a red rose under a glass globe? Centerpieces should be key-- remember that people stare at it the entire night. Some should have candleabras (for Luminaire) and some should have clocks (for Cogsworth) and all should have tons of red roses.
The cake for sure-- Belle's castle
Your dress should be just like Belles! If you don't want to wear a yellow gown, check out the gowns by Saison Blanche. They have quite a few belle-esque gowns that are still white.
Your first dance should be to "Beauty and the Beast."
Instead of coffee after the meal, you could serve Tea in little tea pots.
All your paper goods shold have the disney Beauty and the Beast logo or emblem-- your programs, invitations, menu cards, etc. You could put the song lyrics to a song from the movie in the back of the program.
Walk down the aisle to an instrumental version of a song from the movie.
Choose a few signature drinks to serve at the wedding and put together little "menus" for the drinks and place them at the bars-- name the drinks after characters. Like, "Gaston's Gimlet" or "Mrs. Pot's Spot of Spritzer."
Have Disney project scenes from the movie on a screen at your reception. No sound, just the images.
Will there be kids at the reception? If so, set up a little corner for them with lots of yellow and red pillows and blankets and have the movie playing for them. Or better yet, have Belle come in and do story hour for them in a corner in the middle of your reception! The parents will love the break!