Enter through one door and exit through another, is there a limit?

All open-style parks can enter, no restrictions.
There are no limits, all can come and go.
Someone calls to inform the specific boarding and disembarking addresses.
Open-style parks can all go in, no restrictions.
There is no restriction, all can enter and exit.
Someone calls to make an appointment and tells the specific embarkation/disembarkation address.