I think you totally overreacted and that you went to this wedding determined not to enjoy it. It was sad for the bride that she didn't have her own father to give her away, and an honour for your DH that she asked him to do it. She must have a fair degree of fondness for him.
At your age you must have known you wouldn't be sitting at top table! I've been to plenty of weddings where I didn't know the other people around the table with me, but I have been able to chat to them and even have a good time!!
I don't have a close relationship at all with my SIL, and in fact, she didn't even invite me to her own wedding, in spite of insisting on being a bridesmaid at my wedding, DH and I having been married for upwards of 30 years at the time, and only invited my DH. She also took zero interest in our children, her only close blood relatives other than my husband and her son. I could still 'pass myself' if forced to be in her company.
In fact, I went to my DH's BFF's wedding last year, didn't know a sinner other than the groom! I chatted with many of the groom's family members, and they were all lovely - in spite of being apprehensive, I had a great day!
You're wrong! Just be glad it's over!!