A birthday table
Cake, crisps, and a crowd are a lot. Feed them a familiar meal before you go, and let the party food be optional.

Feed them first
If they only eat the bread roll, that is a fine party. Watch foods that are easy to choke on while they are excited.
A familiar meal at home means the party is not their only chance to eat. Cake can be a taste, or a skip.
Excitement and chewing
A loud room and a running child are a poor mix with whole grapes, nuts, or hard sweets. Stay near them if those foods are out.
If you are unsure a party food is right for how they chew, leave it. Ask your child’s doctor when the question is about choking.
Allergies at a party
Ask what is in the cake before it is on the plate. Egg, milk, and wheat hide in party food.
Bring a safe food they already like so a no to the cake is not a no to eating.
A sentence you can say
“We already ate. The cake is a maybe.”