If its full, its full. If you have a half pint glass and want a pint, then you can only have half a pint, the other half won't fit until the first half has gone. It works like this at the venue.
So the best thing to do, is be on the reserve list and turn up in the hope other people don't, and then Roger will fit you in as space is made available.
Its full cos its ace, the other thing to do - is book in now for the round after! Don't be dissapointed, be part of the first half pint..