We're planning a birthday party at a soft play place. The birthday package includes drinks and hot food for the kids, with platters for the adults available as an extra. Attending kids will be aged 2 - 4 so parents will obviously be staying. I say that we don't need to feed the adults and they can buy their own food if they're hungry (there's a cafe attached and prices are very reasonable), but DH says that's being bad hosts and we should make sure there's at least picky bits for the grown ups.
We've only been to one such party before, which was a BBQ at birthday child's house. Adults were given a burger / hot dog each so maybe DH has a point?
What's the general etiquette?