I've moved house about half a dozen times in the last 35-40 years and can't really say I enjoy the process. I tend to be quite organised with packing once I get started (usually after a period of procrastination!) I label boxes clearly with the room they should go in and a rough idea of what each contains. I don't really like change much and find it hard to get used to new things, new areas, new friends etc. My chronic health problems mean GP and hospital access is a high priority. Recently we have been thinking about making a move that would be a big change for us but nothing set in stone yet. I'd be unlikely to consider an 'age-appropriate' type of apartment.
Downsizing is also not on the agenda for us - if anything we are looking for more space, especially as my better half's business partner and best friend would be coming with us - we think with the right property and (hopefully) bit of land or at least a big garden with outbuildings (or room to put them) the three of us could make a good life. It needs to be somewhere the two of them could continue to have a good life after my death, plus have the scope and space for if our friend meets someone he wants to share his life with and/or have children in the future.
Each time I move there is inevitably some de-cluttering involved - sometimes I find it liberating to get rid of a few bits, give things away to someone who likes or could use them, or to donate good quality items to the hospice charity shop. Other things are harder to get rid of, usually because of memories attached to them or sentimental value of things that belonged to deceased friends and relatives.
If I was on my own I might be forced to consider living somewhere with assistance available but I am lucky that I have my better half and his friend/business partner to help me with so many things; they are 5 and 15-odd years respectively younger than me!
We are hoping to move somewhere more rural with opportunities for them to continue their current business and/or create new ones. We won't go unless all 3 of us agree it is somewhere we like and think we could be happy, that has all we need (they need parking, storage sheds, garages and workshops) and we would love a smallholding or somewhere we could have animals as we are all passionate about wildlife, conservation, rescue etc. As I find the whole process quite stressful I'd do things like gentle packing and unpacking at the other end, organising change of address type paperwork for them to sign etc - they would do all the lifting, loading, driving etc as well as DIY/building on whatever we buy (with our limited funds we expect a fair degree of work will need doing - luckily they are both pretty good all-rounders with a good skill set between them for house and garden.
Ideally we would like to stay in the south-east but budget constraints mean we haven't ruled out living elsewhere. We did view something in Wales, near to my better half's family cottage in Wales where his dad lives - this was in part because we like the thought of a nice remote place with no neighbours and in part because as his dad gets older and may need more help we would be nearby. We have used dad's cottage as a base for holidays and while viewing Welsh properties. We have to be realistic with our expectations - like is so often the case we can't afford 'the dream' property so are carefully considering things that come as close to it as possible.
I don't have any real tips apart from research the new property and area to ensure as best you can that it meets your needs. Be organised with packing and double-check any moving arrangements to make sure moving day(s) run smoothly. Have a folder or box file to keep any relevant paperwork together, including lists of people, companies, utilities etc you need to notify. Prioritise which services to contact first, which boxes need unpacking first etc. Even tough it may be boring, read paperwork and watch out for all the hidden costs - we found every time you shake hands with anyone involved it is usually expensive! Have tea, coffee, sugar, milk, biscuits etc handy or flasks of hot drinks or soups to keep you going as moving usually involves long hard days with little rest time. Have a takeaway meal that first night as it's unlikely you will want to cook and if boxes are properly labelled you should be able to locate a few basics like plates and cutlery. If you have hired any help make sure payment is readily available, along with a decent tip if you are happy with help given. As friends usually help me I pay in meals or some sort of barter (I once did a ton of proof-reading for someone - they did end up with high grades so I like to think I was of some help!)
'Age-exclusive developments' are perfect for some people just not what I would want for myself (not yet at least). Here's hoping we do find a place we want to move to and that everything goes well.