Oven on 100-150oC. To keep food warm once cooked. Defrost sausages if necessary. Burgers are cooked from frozen. Slice onions and fry, once done put into small rectangle tin, cover with foil and place in oven. Start cooking the first batch of burgers and sausages on the BBQ, 0nce cooked put into trays, cover with foil and place in the oven.
Beef burgers are in the drawers of the kitchen freezer, cook from frozen. Sausages are in the fridge, if not check freezer. Fresh baps and hot dog rolls are in the kitchen. Any fresh ones not used should go into the freezer at the end of the evening. Plenty of sauces in the fridge. Cheese slices in the fridge. Napkins in the cupboard beside the sink.
60-70 beef burgers - if all the teams present (adjust accordingly) 30-36 sausages (whatever's in the kitchen) 1-2 bags onions (whatever's in the kitchen)
Suggest cook 50 initially then see uptake from U9's and then cook more if gone well. Always cook all the sausages.