Well.
This gets stickier now that receivers are leased. I am guessing if you quit D* and have to return the receivers you would get charged the max fee if you didnt return the access card (forgot what that fee was).
Essentially, with no phone line, they can't phone home, you'll never get charged. If circumstances lead to you needing to send that IRD/Access Card back to D*, they may read it, and in a few years you end up with a bunch of charges you're liable for.
In your situtuation, you should order PPV from online. This will allow you to watch it on all of your receivers. If you order a subscription service (if it lets you) you would only get it on a single receiver because without the ability to phone home and let D* know you've subbed to it, the other receivers will not get the authorization from D* for you to view that content.