I felt that the wedding dress didn't work, the pie frill around the neck looked like an afterthought, and the sleeves just didn't fit her, all the wrinkles and folds in what, presumably, should have been straight narrow fitting sleeves.
The fabric didn't drape well, and the veil was clumping and clinging.
The theme of the reception was "Festival" which might explain some of the dress choices of the guests, and maybe Ellie was attempting a fusion of Classic Bridal and Festival for her own look, but didn't quite pull it together.
I liked Cressida's outfit, though a mid green jacket would have been better than the black she wore, and it was nice to see Eugenie in a V neck dress.