enforcing quantity minimums for wholesale only?

Hi there,

I have done something similar in the past. The scenario was slightly different, but you should be able to use it ora variation on it. The requirement on that occasion was to sell completely different products to wholesale customers, so once logged in they would see the wholesale and ONLY the wholesale products. That way you could set up separate products as "case of"  or whatever which would achieve what you want.
However, I doubt this would prevent wholesale customers adding products to their cart BEFORE logging in. One thought, off the top of my head, for that, is to use SKU's for wholesale that start with, say, a specific character or are in a specific number range and then add code to the checkout process so that wholesale customers are restricted to just those products.

There could well be a better way, but it's food for thought.