In October 1997, after they had divorced, Michael Jackson and Lisa Marie vacationed in South Africa where Joe Jackson and Katherine Jackson also attended. Michael also brought, who I believe is his secret son, Omer "Michael" Bhatti along. Lisa Marie's children were also on the trip.

At this link you can watch the video I did on their history before the marriage.
https://www.youtube.com/watch?v=jvupYprJmRw&lc=z23tszkyhwazftsjf04t1aokgyg0gnhizv3fpbmbd1wcbk0h00410