Unfortunately that lovely gesture may very well turn out to be an albatross around her neck. Every single aspect of their personal relationship, engagement, coming wedding, etc. are all being measured against "Diana".
Williams long road to an engagement: Because of Diana.
William makes a loving gesture: Because of his mohter.
William is good with children: Because of his mother.
Kate's engagement ring: His mother's
Kates choice of dress for the engagement announcement: Emulating his Mother.
Kate's developing style: Emulating his mother (badly).
Kate's (supposed) Princess Training: Because of his mother.
Wedding: Said to be designed to include as much honour to the groom's deceased mother as to the luck couple.
Somewhere in this Wedding and their life there has to be an honest emotion or action attributable to no one but William or Kate. A choice of wedding stlye their unadulterated own. Their love, their own!