The visiting ancestral graves is more for mid August (Obon) but some people do that in January, but many less. Mostly it is eating a lot around the home, going to a shrine to pray for a good year, wearing good clothes, watching a lot of silly TV, reading magazines and books portending what the future year will bring, usually heavy on economics and politics. Tht is typical Japanese New Year. (oshogatsu). Yes.
What are the traditional foods eaten around the holidays?
I actually saw on tv live fish in a tank being sold in one of their WalMarts.