Wedding cake - don't trust the caterer to do it!

I have never hired s caterer, since I heard such bad things about them in the beginning. I have a grocery store that has cakes. So I will send my sim to buy one just before the wedding, and I place a buffet table wherever the wedding is held. I make sure there is a table for the cake, and bring it out just before they cut it. My entertainers and mixologists seem to do their job, however sometimes it takes forever to get the drinks, so sometimes I'll have one of my sims take over.