Simon, are you planning on staying at New Beginnings? It really will save you some cash. Even if you did bring your car, if there is room in the van, you could still ride with them to surgery. I actually found that my time in the van with Leland (one of the owners), back and forth to appointments and the surgi center was the most useful time. He gives you so much information on what to expect, tips for recovery, etc. He opened their group home after he had his own surgery with Garramone.
If you aren't planning to stay at New Beginnings, driving really is a good idea. You won't have to rent a car then. The airport is a bit away from Garramone's office. I don't know where the surgi center is in comparison to Garramone's office, but I suppose that since you drive to Garramone's office twice and the surgi center only once, you will choose to stay near his office.
It actually is good that you will be driving along I-95 if you think about it. Smooth road with no sharp curves. I was trying to think what my ride was like back from the airport when I got home from surgery, and it really wasn't bad. We took one large suitcase (we shared), because I wouldn't be able to handle a carry on. Instead I just looked like a douche who wouldn't help my girl drag along our suitcase and laptop!