The protetion plan essentially covers everything related to your sateliite system. The dish, the cables inside and out, remotes, etc everything.
Dish gets hit by lightning and blows your recievers and melts the dish, it's covered.
Dog chews the hell of your remote, covered.
Dog chews the cable in half outside or you nick it with the weed-eater, covered.
Covers everything.
Without it, service calls run $75 a pop for our area. Doesn't matter how big or small the issue is, whether it be a connector or re-programming the remote if the customer accidently gets it out of whack.
Receivers are covered under the lease with or without the DPP but I think you still pay the S/H charge.
Up to you if you want it or not but that's what it is. I'd keep it for a year at least, things tend to go wrong more often than not in that first year. Dish gets blown around, an improperly sealed fitting gets water in it etc.