You can have them fitted yes. But you'll need to find out if your car was fitted with a high or low central electric controls module, as you can only retrofit fog lights with the high version IIRC. Also, you'll need a new light switch and kufatech wiring and then coding I think. There's a few people on here that can do this for you. Also, the fog lights and grills are different for standard and s-line.
Just use the search function, there's tonnes of people who've done it already.