Do you mean 'a meal where guests help themselves'? If so, 'buffet' is probably the word you are looking for.
Buffet.
guests
brunch, early meal, or morning meal
train meal
A feast.
DINNER!Another answer:Lunch or luncheon.
Food...
Sweet-meal biscuit is another term for a digestive biscuit...
A banquet, a slap up meal, a feast, Giant fiest, big eat.
dinner evening meal
Wet meal smart.
You're invited to join us for a delightful meal! Please note that while we’ll provide the venue and company, the cost of the meal will be the guest's responsibility. We look forward to sharing this special occasion with you!