Ok, thank you for completing the question. It helps.
Since you are expecting that at least some of the people at your daughter's wedding will act out towards you, it is good to be prepared before you go.
The first step is getting support. Talk to your daughter about your concerns. It is her big day and she may not be able to do much, but she can talk with her father, not about your feelings but about her concerns that everyone be on their best behavior because it is important to her. That may cause him to settle everyone down a bit, lest he be the cause of your daughter's wedding problems and make her unhappy.
Two, take someone supportive with you to the wedding. If you cannot have your husband there, ask a relative or sibling to go with you. Being alone will only make you feel more vulnerable.
Three, limit your conversations and/or responses to anyone who could be or is hostile. Think ahead of time about things you want to say. For example, if someone approaches you and says something hurtful, say I am sorry you feel that way and walk away. This limits the charge the person gets out of trying to hurt you and may calm everyone down a bit.
Four, smile and be polite but keep in mind this is your daughter's wedding. You are helping to host these people and they are your daughter's guests. Much is expected of them as well regarding their behavior. So plan ahead of time with your daughter about how she wants anyone who drinks and gets out of hand handled. Make sure people are in place to remove anyone unruly or who is doing damage of any kind.
If you do some planning, it may not be comfortable but it will be bearable.
I hope this helps you,