No need for wristbands or cards.
The complex is accesible only via a monitored gate and therefore all inside were customers.
I think if you were to be ambitious and walk to the main gate and then down onto the nearest road and attempt to catch a dolmus, then you would need to carry your room card or i.d. to get back in.
Didn't try the breakfast on the boat and didn't hear anyone talking about it. The boat was moored up and under utilised. Hotel could have made some money by arranging short trips around bay but none available.