In reply to partz:
> Lewes castle (East and West), and Giants cave itself will be available to climb
As someone who was helping out the other day on a freshers' taster session, it is good that you are providing warning that the area would be busy, but it is a bad idea to say that certain areas 'will be available to climb' in quite the way you have because it gives the impression that the areas you are using would not be available to climb - which should not be the case. Perhaps you were just saying that you would not be in these areas, but that is not how it sounds.
At a very minimum anyone who wants to climb any route should be able to join the queue, as it were, but in practice groups can be much better managed than that. If you have 6 top ropes up and a single pair or two of climbers want to lead some routes, it is not a massive pain to just pull up the ropes on those routes and move people to other routes for a few minutes. If there are many more people it is more complicated but in that case it is probably not a good venue/time to top-rope.