I have three sons and one daughter, all got married. DS1 got married in India first, purely religious, then again when I paid for one on the London Eye to finalise the paperwork. No involvement apart from expense in those.
DD said she wanted to wear my old wedding dress. I dissuaded her from that, then she asked me to make her one! She tried it on as soon as I had got the bodice and skirt together and burst into tears saying it didn't fit... After some reassurance that that was what fittings were for, she was happy with it, but a bit stressful.
DS2's MiL made the dress for her daughter, again not involved.
The only time I set foot inside a wedding dress shop was with my DS3's fiancé. She wanted everything recycled for her wedding, and came up with a stained dress, in a really unsuitable style for her, from a charity shop. (let's say it was designed for someone with more up top!) . She asked me if I could alter it to fit. She also produced her grandmothers wedding dress, which was grey and a very odd style and shape. I couldn't get either of them clean, and pleaded with her to let me make her one.
I found some ivory satin on eBay that had been used for tablecloths at a wedding, so she was happy it was still recycled. Then took her to try on some dresses in a bridal shop so she could decide on a style she liked. The dresses were over £3000 each, ridiculous price to pay for a few hours wear, but we got some ideas. In the end she had the tablecloth satin on top, and the stiffening from her grandmother's dress underneath, and she was happy. I was a bit of a wreck, thinking if I messed this up, our relationship would be skewed from day 1!