What happens if he isn't the "right one" and a divorce ensues?
In the States, we saw movies about Arabs with camels and tents; in Kuwait they watched movies about cowboys and loose women.
Preconceived notions are hard to detect until problems arise.
Then, what happens if the family doesn't agree or worse: World War III erupts and potential-mother-in-law suddenly develops a "near" fatal heart condition?
Some men may opt to marry first, then announce; but then probably at the loss of the big wedding with the beautiful gown and all the flowers and with no guarantee of a smooth transition into the family.
For example, if you are a single woman living alone in Kuwait, you may not want a man you only recently met to invite himself to your home under the assumption that it is "okay" because you are "open minded".