Waffle overload there matey! I'd nip next door pack of ham/beef ect, kids love triangle sarnies in different variants...bowls full of crisps, plate of chips...if you make too may sarnies take them to work next day lol..
Sounds like you have a nightmare there with that many, and ask who kicks off when they have orange or coke. I made the mistake of giving my daughters friend dilute orange, jesus still got the inprint of her on my ceiling..hyper wasnt the word.