A little general info. Directv is the one preferred by RV'ers for TV alone. Direcway for two way internet access. Mainly because Directv isn't anal about staying in one place. They're much more "mobile friendly."
DirecTV has so many options it's actually better to contact one of the local brick/mortar places for current "best offers" if you're not a techie TV type. As an example, there is a TIVO like dual receiver DVR system all in one box wherein spouse can watch TV in the bedroom, record what she wants separately
and concurrently while you do the same in the living room. Done via RF remote controls, so the remote sigs go through the walls. Consider two separate receivers though. Especially since, with a cheap satellite dish, the receiver, a TV and a tripod you can go to a C-Brat gathering and not miss a game. Tripod has to be on a surface that doesn't move though, so floating docks are dicey....
A good/bad: Mobile tracking satellite dishes cost about $1500. After watching what cell phone addiction does to drivers I can imagine what on-the-road TV capability will do eventually, and no I don't believe drivers won't find a way to watch.... They will, however, work on a floating dock or properly moored C-Dory, so for the man who has everything and no horses or multiple dogs to feed might consider it.
The ugly:
Lots of "extras" can eat away at the cheap per month charge. Each receiver is an additional charge and you need one for every TV in your house UNLESS you don't mind watching whatever the person with the remote is watching. You may not get local channels and that means a separate TV antenna. You may also suffer from channel overload. Just too many choices! If you do get local channels, you may lose them if you switch the system to your summer palace or go RV'ing. Clear view of the sky is absolutely necessary. Sufficient rain can interrupt the game.
Internet:
Direcway is owned by Directv. The die hards use the Datastorm system, either tripod mount or mounted atop their RV, but that system costs around 5 grand for equipment and "installation." $59/mo for Direcway if you buy the equipment for about $600 up front and only use a tripod mount or only use it at home.
The bad - they use different satellites so you can't watch TV and surf at the same time without a second (cheap) dish for TV and an account. DirectTV is a separate charge.
www.datastormusers.com is a good place to go to learn about satellite internet both on the go and at home.
The ugly:
Watch your warranties. The equipment is sensitive and spendy. The upload side of DirecWay is 80-120k with the newer 7000 system but slower than a dialup with earlier modems. DirecWay is still suffering occasional outages and glitches.
On edit: changed my careless use of the word TIVO to the more correct "DVR."