They have many duties
Every crew will have plenty of other jobs to do, ones you may not see but are no less vital to the experience
Remember you may not have to be up early, but they do, so don’t keep them up until sunrise - let them have their sleep. Allow the crew time to do their jobs – whether they are completing their various housekeeping tasks or servicing essential systems on board, give them time by stepping ashore for a few hours or simply relaxing on deck, out of their way. If you want the crew to join you ashore by all means invite them, but don’t be offended if they politely decline.
Whether you're out exploring on the watertoys, visiting the local port or hiking and biking ashore, giving the crew some space always helps them work faster