Here's what I'm trying to do. I have two custom post types, vendors and products. These are connected, via the Posts2Posts plugin. A vendor post has various meta fields associated with it including some for their address.
What I want to do is to bring up a product and then a) get the connected vendor and THEN b) query for meta values for that vendor.
The reason I want this is that I need to be able to show a visitor all of the products made in a particular state and the state information resides in the vendor CPT, not the product CPT.