Random watts, volts, kw generator question ????

I have been asked to provide my van for a carnival for free for my little ones nursery !! No one on it !

DJ in it with equipment on the back, how does it equate to how many watts bla bla bla to what size generator will be needed ????

As you can tell I have not got a clue. I am not sure the DJ is 100% sure either !!!

 

Tell them no chance

 

If he can run off an extension lead normally that's max 13A = approx 3.5 kva.

 

I expect a 2 kW generator would be more than enough though.