Florida divorce laws start with a presumption of 50-50 property division. The law does allow the court to distribute property unequally, but it seems that every case that grants an unequal distribution is reversed on appeal.
Continuing that trend, the Second District reversed a property distribution order that gave the wife 70% of the marital assets in a 37 year marriage. The reason for the award was that the wife's parents gave the couple much financial help through the years. Those financial gifts made the marital property possible. The court reasoned that it was fair to return those "gifts" to the wife, considering the equitable nature of property division in Florida.
The appeals court said no, reasoning that the gifts were made to the couple, not just to the wife, and that the parental gifts were not an extraordinary contribution to the marriage by the wife. If you are looking for an unequal distribution based on your extraordinary contribution to the marriage, make sure the contribution was actually based on your own actions. You will need an extraordinary reason to get around the 50-50 rule for property division in Florida divorce law.