Yesterday I threw a big wedding party and the wedding cake wasnt big enough. Is it possible to make the wedding cake have more servings with retuner?

I found it
I followed the normal food serving patch in retuner.

That's an interesting idea, thanks for sharing it even though no one reacted quickly enough to help in your finding the solution. What I usually do is use DE to soft-reset all but six or so of the sims on the lot when I see they are aiming for a slice of cake when I want the wedding couple to have some (of course) and not have to put up with all the temper tantrums and foot stomping when there isn't enough to go around. It's not like these sims should be hungry anyway, there's usually enough food set out at my sims' parties to feed a medium-sized army and actual player controlled household members, the hosts, should be the very last ones served anyway. Let the rest of 'em eat pie.

Thanks for the great idea budewarmin! I've added the setting to Retuner's page in case anyone else would like to know.

Members' Retuner Settings#WeddingCake

I'm glad my findings were usefull