You would need to put up some sort of fence. A solid one would be better than a chain link. There would need to be no gaps that a rabbit could fit through. It would need to be at least 4ft high. The gates also need to be safe, no gaps and they should shut tight.
Make sure any plants are safe for rabbits. If they are not safe, either get rid of them or fence them off securely.
Try to provide shade and protection from predators. Even though you should be out there watching, an attack from a bird would happen in a few seconds.
You can also use x-pens or make an NIC pen to use. Make it as big as you want (or can afford). Having a top to provide shade and protection is a good idea. As long as the area you set it up on is safe for a rabbit, it would work. You can then take it down when you are not using it.