I think it's a shame when children are excluded from weddings, as I see weddings as a family celebration, but that's my opinion.
How people want to celebrate their own wedding is their business and they should not he made to feel uncomfortable or guilty about it. Your DH should tell his DD to speak with the wedding couple and not involve you both or anyone else. However, I'd be telling your DH to tell his DD not to question someone else's wedding arrangements.
If anyone moans to you, tell them that It's up to the wedding couple and no one else, and not to bother you with their moaning.
Angela Rayner lashes out and calls Sunak “pint sized loser”.