The main industry on the island is Tourism. Folks from Japan, Korea, China and Russia will pop over for a short trip, to get out of the cold. Or to escape the pressures of urban life, if only for a few days.
It is really perfectly located for a little getaway from those departure points, and only 1 hour timezone difference from both Seoul and Japan.
As a result there are plenty of vacation-friendly choices on Saipan: resorts with full-service spas, golf courses, water sport businesses (scuba diving is especially popular but so are paddleboarding and parasailing for those who may not be as strong swimmers), jungle ATV tours, beachfront chapels for destination weddings, etc.
Having visited both Seoul and Tokyo, I am much more aware of how precious the time away from crowds & subways is for Saipan tourists. Make the most of it, you guys!