AIBU to want to make a speech at my child's wedding

The only possibility I can see is if the floor is left open at the end of the speeches should anyone else which to add a word. If this was so, and you decided to avail of it, I'd keep it to only 2 or 3 sentences.... literally.... very very proud and wish you both well.

On the other hand - if bride doesn't want an official Mother of the Groom (mini) speech she may not approve of an open-floor-usage.

Whatever you do, the Bride must not be offended/upset in any way on her wedding day, it would never be forgiven or forgotten.

If I were you, I'd forget about any speech. I agree that the idea sounds nice from a Mum point of view, (it could either be great or otherwise from other folk's point of view) and if the Bride doesn't go for it, enough said.

Isn't that sort of what the best man does - amongst pulling him to pieces etc?

I have just spotted that your DIL to be has said No.
That is that surely?

I “whine”? No I don’t!
“I think” !

Don’t go there!
Even the FOB speeches saying how wonderful their little girl is can be excruciating.
Your idea sounds a million times worse.
It is NOT your day, it is theirs, and unless they have specifically asked you to make a speech I whine it is entirely out of order.

When my daughters married , my husband dead, my brother made a speech on my behalf . The grooms fathers also made a speech . Perhaps the family wishes to keep to this tradition ?

Accept that the wedding day is not your day.

If you want to publicly announce how wonderful your son is (and possibly seriously embarrass him in the process) why not host a pre-wedding get together with DiL and her family and make your speech then.
It’s common practice in America for the groom’s family to host a rehearsal dinner the night before the wedding itself.
We did this when DS got married in Virginia, but were not expected to make a speech.
If you do make a speech, it might be a good idea, as well as saying what a lovely young man your son is, to mention what a lovely girl DiL is and how you are so happy that he is settling down with her.

I am not sure. I seem to be in the dark about it rather. But I think it is sad that the family of the bride can talk about their daughter and wish her well publicly but not the family of the groom. I do understand that no one wants the speeches to go on for ever but surely a couple of minutes should be ok. Otherwise it is just making more of the fact that it is all about the bride and not the groom. (I know the best man traditionally talks about the groom but I don't think this is the same. Risque stories from someone who hasn't necessarily known him that long, in our case from university, is not the same thing)

Take this on the chin and do not mention it. I know it is hard, but it is their wedding. You have years ahead of you to get to know and love this lass and you do not want to get off in the wrong foot.

Will there be cards/telegrams read out? Maybe you could say what you want in that way.