Growing up, my parents used their china about once a month. I feel like that's pretty frequently. My dad tried to give it to me not too long ago, and while I'd love to have it, I just don't have the space or practicality at this time. Once live-in and I buy a house, or a larger apartment, I'm hoping to have it. Although, I can't lie, I would like to register for my own pattern when I get married.
Live-in's family only ever used one set of their three, though, the Christmas set. So, there's a high likelihood that we will not be registering for it because there's a high likelihood we will not use it. Perhaps we'll just register for nice ceramic dishes instead.
The customs from my hometown area are similar to Dee's - gifts for the showers, cash for the wedding. No honeymoon registry required.