Can you explain more of what you have access to?
You want to plug your camera into your mac laptop which has some sort of access to the internet, that isn't related to a router you have?
How does your mac laptop have access to the internet? Are you on a 3g/4g USB stick?
If you're using a stick, you're probably going to need a router. 3gstore.com and 4gstore.com (same thing last time i checked), has routers for 3g/4g USB sticks, so you can share your connection between your laptop and camera.