No paid bonuses. But, I did get all of my college education paid for. I have no bills. That is a tremendous advantage. If you work hard and give it your all, there will be money to pay for school.
Swimming is rewarding.
In subtler ways, swimming is beneficial to both participants as well as their parents. Potential perks revolve around the team aspect of the sport. Everybody gets to participate. Everybody has an opportunity to contribute to the outcome. The top five swimmers in a dual meet score.