Interview for visa for a non Belgian married to a Belgian

I am hoping to join my wife and two kids permanently  in belgium and i am new on the forum.I wanted to ask some questions.My wife is a Belgian and we both have two kids.We got married in 2022 and I am currently based in the Uk.We were able to submit our legalised marriage certificate and translated them in February this year.Yesterday my wife got a mail that we should come for an interview.My questions are what do we expect from the interview 2 should I send them further evidence of our union like pictures and videos.

Thanks,would appreciate a reply

@Kevinosagioduwa hello welcome.  They just want to know how well do you know yourselves.  So you will be asked questions of your relationship.  Like where you met, howmany times you have met, fav color, favourite meal, what irritate your partner,  if you have children their names and age, your hobbies , your spouse current and old job, how much theu earn, do your spouse the sponsor send you money ? when you first met, their parents name and where they live, siblings if they have, where did your spouse study,did you do any engagement before marriage?where when and how did it go, who was present? When was your wedding? What did you wear? Who were your witnesses did you  have a big celebration? These are some questions I was asked and it was a written interview.  Event that have pictures it will be good you provide them in 3 copies   I hope this helps you.