Wedding cake not shared with the guests?

I’ve watched way too much Cake Boss but basically they’ll have a wedding cake and they bride+groom cut it at their wedding, waiters reel it in and then they serve the wedding cake PLUS the extra cake they get made on the side. Tgats how they feed everyone because like somebody said up there, it’d be cut so thin you could see your spoon through it, lol. Basically these extra cakes are made EXACTLY like the wedding cake, taste-wise, and served. I think it’s a great idea.

I’m hopefully going to have a badass Lahori wedding but I’d still want a cake but only so I can get that quirky Pakistani-bride+groom cake topper. Ahem.