Probably a good idea.
No matter what they say, it would probably be twisted somehow.
Yes, I believe you are correct. Plus actually none of our business. Even though she is the granddaughter of the Queen, she gets no income from taxpayers, has her own money, is marrying whom ever she wants as doesn't need royal permission so they will do things exactly the way they want. And good for them. I am sure the Queen will want to do things for them as she did for Eugenie, but they just might not want all that hoop-la.
The nasties will be out in full force anyway because her eyes are too large, her teeth are too long so what bride really needs that crap. I personally loved Eugenie's wedding gown. One of my top three royal wedding gowns of all times but some hated and were very vocal. Why put yourself thru that jealous garbage. Her day, her way and BRAVO. She will make her Granny proud, I am sure. JMHO