I think this is a great idea. I love my movies and having a relaxed setting to watch them with friends will be a great addition to ED. I agree with the other posts that 20 people may be too much to gather on a regular basis but if you can make it into a multiple purpose venue for kids parties or functions then it would be the best of both worlds. You say we can bring our own drink, would we have to bring food as well or would that be provided? If food is provided I think ?12-?15 per head is reasonable. If only snacks then ?5-?8.