I mean it's obviously better if you do like to read, but I know lots of people that don't read for fun and do well so I don't think it matters too much.
This link isn't working for me, and I did OCR anyway.
Sorry. However I can tell you at AS we only had 2 set texts, one of which about 15 poems and one a novel so I'm sure you can handle that amount of reading lol. For the coursework we chose any three texts we wanted after 1900 so that's where I would say reading for fun would come in handy, but if there's no coursework now I doubt it's an issue.