Roland, you are corrct but with the limited numbers likely to actually go to Garda a rabbit start as suggested by Jim would be fine. As to marks, once they are laid they stay in position. There either is wind or there isn't. The club have some fixed mark positions and that is it. We could ask them to put in a windward and leeward mark at 12pm and collect them at 4, that would probably do us on a typical Garda day. I suspect the only issue may be that if they are involved in any way in a form of race assistance or organisation the dreaded H&S becomes an issue and they may be bound to provide safety cover.
I will ask them on the basis of the above and let you all know. Presumably 3 or 4 days of an 'organised course' would be enough (Mon to Thurs) and any other days just blasting.
For anyone thinking of going Garda is a strong wind venue. If your boat can break it will break so if your boat has a habbit of breaking or you struggle to keep it upright in the UK then consider a lot of bimbling and sailing practice beforehand. Plus some small sails are very handy!