inviting family members to attend wedding in usa

[sunny4all]

hi , i am getting married to usa citizen, i am an indian citizen on h1b visa , my inlaws are happy to sponsor my parents and sisters to attend wedding in usa .
i understand they all need visitors visa

what all documents do my inlaws( sponsors) need to send to my family?
what documents do my family need to provide for the visa ?
are there any one in the same situation as me in this forum ?
can any help me
thanks bye

[mrs3vo]

Hi! I wanna know the same thing I will be married to an American too once I get my K1 visa hopefully soon our petition got approved last month and just waiting for my interview here at US embassy in the Philippines. I want my parents to witness my wedding too but have no clue how to do it.

Inputs anyone?