Thanks, did reserve a site and apparently they actually have a gatehouse manned after 4 p.m., unlike many TX S.Ps.
Your laying in of fruit and veg sounds brilliant, good thinking. As far as brussel sprouts, we used to just steam them, bit of butter at the end. First cut an X in the base so that part will cook quick as the rest. I think I've done the roasting technique but don't recall it being worth the extra time or effort.