As a rule, bikes outside of the port are being used by other customers.
If you return a bike to the port that is parked outside a port and is not in use by other customer, you will earn rewards.
Charichari is a service that can be used for port-to-port transfers.
If the management confirms any malicious behavior, you will be restricted from using the service and will be required to pay for the cost of the service.
Please use the service with good manners.