I think its going to cost about $5-6 per head to cater, (nudge is a bit of a demon on the BBQ, so by the time you've finished your first drink across the road lunch will be cooked to order) , much cheaper than grabbing something from the pub, additionally everyone can eat at the same time instead of the delays caused by having to wait while they cater to their lunchtime rush (st.alban inn is pretty popular generally at weekends), remember what Kangaroo Valley was like on the Southern Highlands run..........