Nearing retirement age, there'll also be the option for a group counseling session a time or two. These are held yearly in different locations. I was lucky that two were held locally (prefectural capital where they do have one of their hotels, small one). I think my first was 4-5yrs before retiring, the next was the year before.
You get another copy of the yearly statement--a preview of what your stipend* will be--and the lecture very so-so, where someone reviews most of the points already there on the handouts. Then Q&A. At the second, there was the chance to meet one-on-one with someone if you wanted to (reservation needed?).
*they never say exactly what you will be getting, only what you'd be getting if you retired right then. But it's ballpark close, so no worries.
All that in japanese of course.
One thing not mentioned, and that I never got, was the occasional offer for a PMAC credit card. Probably nothing special about it (points, etc), but if you need another card, or have had trouble getting one otherwise, their card is probably a breeze for any member to get.
Also, I think most everyone stays on their insurance system post-retirement. As described elsewhere here, it'll be cheaper than 国民保険 that first year, and you use/continue with the same card, so at the point of retirement, where lots of other things are changing, this is one point of stability--one less thing to think about. I stayed on it for two years, tho for that second year you can price compare by going to city hall and exploring what the cost difference will be.