In 2019, we took the ferry. We walked to the ferry from the cruiseship, then on nevis we walked through town down to pinney’s beach, about half hour walk. Coming back, our ship was in port till around 6 pm and we took not the last ferry but the one before (just in case) and everything went smoothly, but from what I recall, there was more than 2 ferries per day. It was cheaper than the private shuttles from the south en of st kitts.