It'll be fine. It's freshers week soon, and then students back en masse; they are bound to benefit from that during the week if they are screening live games, regardless of the CCFC theme.
They have just started to market the upstairs function room, so I'm sure they'll have regular stuff in there, plus the matchday revenues. They may have to adjust opening times, staffing, pricing etc. but it'll be fine. Selling their own beer will also help I guess - but on that note, the quality of the beer does need to improve - it's not good at all. You'd think that would be the least of their worries.