Just an FYI, there’s a new thing in 2024 where you can roll unused 529 funds into a Roth IRA tax/penalty free, as long as the 529 has been open at least 15 years. From a pure financial standpoint it makes some sense as it can continue to grow while the ICA loan is paid back interest free.
That said, once the payroll deduction kicks in, it does take a rather large chunk of their pay. So having that loan paid for and out of the way is rather nice.
For as much as it seems like they wouldn’t have much to spend money on, routine trips downstairs to the cadet store, dry dock, Leamy cafe, Ubers and going out to eat on Saturday Libo, adds up real quickly!!