Sorry, nope. But I have a few comments from my transition. And you might want to post on the Post-FIRE sub-category - where us retired folks now hang out ;-)
Look at your health/dental insurance now and future. If there are big changes, get anything optional done while you are well covered.
Car insurance (if you have ditched the car, ignore this, and if you are in NYC you may well not need a car) - discuss this with your insurance broker well ahead of time - even if your mileage doesn't change much in retirement, your driving category does. Mine went down a lot.
Are you planning a move? Start working on it well ahead of time - decluttering to make the move easier, and make selling easier if you are an owner. Start getting a feel for where you would like to move to - local papers give a good feel, I find.
Staying put? You will be home a lot more - do you like your present accommodations? Or would you have cabin fever if you were not out working? And maintenance - home during the day means not turning the heat down while you are at work - is the insulation good? How are your utility costs? Is there room for hobbies that may expand and take up space?
Social life - activities. Who will you hang out with during the day? Do you have friends who will be free? Or will everyone else still be working, and only available evenings/weekends?
I'm sure others who have retired recently will also have thoughts on what they did well/could have done better in prep.