If you're moving to a campground, I'd check what kind of cell signal you can get there. Most wireless phone companies concentrate their cell towers along highways and denser population areas and skimp on lesser populated areas. Outside of cities and suburbs you often get no digital coverage at all, but have to default to the old AMPS analog cellular system.
You may end up getting a Verizon/Sprint (EV-DO) or Cingular (Edge/UMTS) wireless phone and find you get no bars of signal strength.
I won't recommend which one to get since I work for the company that pioneered CDMA and invented EV-DO and think that any GSM or TDMA-based phone will fry your brain. I admit I'm a bit biased.
Satellite's biggest enemy is trees. If there are trees blocking your southern exposure, you may be able to compensate by cutting branches or moving the dish around. But if you can't get a clear southern exposure without a fifty-foot pole, for instance, satellite may be out, too.
