Attend Wedding Properly: No
Have Respect For Your Partner: No
NGL pretty unrealistic and dumb, who in the world gets married and just walks off before the Priest even announces you Husband and Wife??
Why invite people to the wedding if that's all the wedding is? You might as well have a wedding that lasts 3minutes with the Bride and Groom and priest
Doing this in front of other people clearly shows his disinterest in her as well as showing he has no respect for her.
Who cares if its a political wedding without love, you literally don't have to love each other to get married but at least respect your partner by not ditching in the middle of the wedding