I've never stayed at either resort. However, I have stayed at the Boardwalk. Beach Club, Yacht Club & Boardwalk are all nice since they are within walking distance to Epcot. If you felt like doing a long walk, you can also walk to Hollywood Studios. (I only recommend that if you really want some exercise!) My friend has stayed several times at POR, and she enjoys it. Especially Yee Haa Bob in the lounge.
Beach Club I think also has a character breakfast restaurant? So that's also a plus staying there. If you do the Beach Club, try to rent dvc points if you can. You get a nicer/larger room for a better price. But it's also one of the harder dvc resorts to get.
I'm trying to figure out where we are going to stay as well for our wedding trip. I want it somewhat easy to get to & from our ceremony site, but I'm also looking at maybe doing an in room celebration, if we do the Memories package.