i thought the guy only pays the mehr if and when he is leaving her and not at the time of the marriage..??..
If this was the case I reckon hardly anyone would pay up..
Best to get mehr all done and dusted before the wedding imo, staggered payments during marriage may lead to resentment when there are bills, mortgage payments etc to pay and what happens if u fall out, he loses his job or ur financial situation changes in some other way? Too much pressure imo..