The mistake people make is to rush things. Ok you would like to watch football on Saturday, we all would like to but it is not as easy as throwing up a dish and switching on. Yes you may need cams and cards to watch football but that was not the question you asked initially. You asked will you still get channels without cams, the answer is yes. It may be better to first of all ensure you have a working set up then, ensure you can find the satellite that transmits the football and take the necessary steps to succeed. As I mentioned there are many people here to help and meany threads to be read before running for the finish post.
I should have asked are you intending purchasing a subscription to Sky on Astra 28.2deg? as this is the only way you will be able to watch footy on that satellite, since their encrytion has not been exploited and is not likely to be. Also you have not mentioned what receiver you have purchased, thus it is not possible to tell at this stage if what you have purchased is suitable as a sky box or what embedded cams it contains if any