I serve cocktail sasages at ds' birthday parties - usually the adults eat most of them. ('cos we have the space, we usually have a parallel party while a friend, who is a magician, entertains the kids -and then afterwards they run around the garden until the adults decide to leave ). TBH - I get the best quality I can find, but that seems tobe difficult from even big supermarkets - the only sem-decent ones I have found are frozen ones and even they exude loads of water
Kids' parties are often a load of crappy food - which, once a year, they enjoy. I follow Nigella's template (with a few bits of my own), with piles of marmite sandwiches, cheese sandwiches, hula hoops and quavers (birthday and Christmas are the only times they are bought), crips, cheese star biscuits, mustard/honey cocktail sausages, lots of Lidl gummy sweeties, traffic light jellies, fairy cakes, "age" biscuits (7s last year, 8s this year) and of course birthday cake. Washed down by fruit shoots - and jugs of diluting juice. I do put out bowls of fruit - but they are mostly ignored.
Most of the time the kids are too excited/running around to eat much anyway.
The adults probably eat more of it - the only difference being that in our case it is washed down by bubbly .
In terms of the OP, I'm impressed by the fact that there is something as healthy as carrot sticks!