Tokashiki to Naha Ferry

Hey folks! I’m planning to be in Naha for a few days in early Feb. I’m planning on booking a round trip ticket to Tokashiki island for a day trip. How reliable are the ferries coming back to Tomari Port from Tokashiki? I’m a little worried that I’m able to get to Tokashiki but the ferry coming back cancels due to weather or something and leaves me stranded.

by tazzyyyyyy