Marriage after a haraam relationship in which there was no zina

Do the bride and groom have to be present at the wedding party (waleemah)?

He got to know a girl through the internet and he wants to marry her but her father is refusing

Is it true that a righteous man does not marry anyone other than a righteous woman?

Is it obligatory to have a wedding party?

Should he still do the marriage contract when the girl’s father has died and her mother is still in mourning?

Her brother is in jail and her paternal uncles are in another country. Who can be her wali?

She stipulated that he should not make her leave her house or her country

She got married without writing the marriage contract – should she repeat the marriage?

Her father engaged her to him, then her father died and her paternal uncles want to change the agreement