You have all those things that are needed to receive free to air television signals. The dish, lnb and the mpeg 4 receiver are okay as long as they are not locked to anyone service provider, which obviously is not the situation.
Now, you need information about satellites that can be received...
Whatever you are paying it doesn't matter....If you are taking some extra services then you'll have to pay extra money for it....It can be for your usage depends..how much tariff they are demanding..
Better first to consult with your service provider...and ask him for the service on a cruise...