Im going to go against the grain and say...
I think a paint job shines better if it's just layed nice and smooth and never wet sanded or buffed. And especially not waxed! But I also know people that are sanding and buffing on it as soon as it leaves the booth. :wack: to each their own. If there are no big flaws in it (I'll even take small amounts of dirt and orange peel) then I see no need to wet sand and buff.
Just my .02 I guess...