I've used Novus 2 , 2 or 3 coats then followed by Meguires or Blitz . Works great but be prepared for super fast game and wild shots, airballs.

Milkwax is a Cleaner/wax combo some people don't care for. The less Petroleum Distillates, the better. ( Paste wax)
It will break down over time. Make sure everything is tightened down.
Enjoy.

Unless the playfield is damaged, why are you using Novus 2? it is abrasive and will micro abrade the surface that it's applied to.

I have used meguiars in the past, the liquid stuff and I've since switched to the paste, it is more expensive. Mothers gold pure carnuba paste wax is what I use now :https://www.amazon.com/Mothers-05550-California-Brazilian-Carnauba/dp/B0002U2V1O/ref=asc_df_B0002U2V1O/

So not only am I a big wax proponent to help keep minor scratches etc off of the PF clearcoat, but as you could see that game got so dirty- and you will eventually be grinding dirt/dust/particles into the PF clearcoat layer.

So a waxed game sealed inside and left and given thousands of play will be much cleaner than one that does not get waxed. I personally will clean and wax every 500 plays or so, some can get away with less. Also make sure to clean your balls and make sure to take out any "scuffed" or "abrated" balls.

I've used Novus 2 on all playfields of all condition. No problem at all....

Novus 2 is a plastic polish , Diamond Coat, Tuff coat, Kryptonite (Data East I think) etc is a form of plastic, everyone and their brother used this product.

I've used Meguires, Zymol, Carnu-B, Blitz. I have machine buffed with wax, Novus 2 to cut playfield haze, Novus 3 to cut mylar haze. ( Worked ok)

When I get a "new" game, whether Diamond plate or not, I strip the playfield, put all metal parts in a tumbler for overnight and all plastic posts in an ultrasonic cleaner. Then I clean the playfield with Novus 2 (along with all under playfield tunnels and under apron stuff) and wax it with Sonax paste wax. The key thing here is to use very little amount of wax,you only want to fill in the minor grooves left after Novus. I also clean all playfield plastics with Novus 1.

After putting it together again, with new lamps and rubbers - and dont forget new balls - it will last quite a long time in home use. Eventually, when the playfield gets dirty I clean it with Novus 1 and apply very light layer of wax.

I dont recommend using Novus 2 regularly, since after all while being a great cleaner it is slightly abrasive and will take out some of your playfield coating every time.

A lot of people do a lot of stupid things just because everyone else does them. A polish it just that, it abrades the surface, wearing the original coat. Unless your game after using a gentle cleaning solution still has areas that are damaged, there is no need to use Novus 2 (and certainly not 3). You're just wearing through the top coat. If you are regularly cleaning and waxing a game you should never need to use it.

Wax it very sparingly with the most solid wax you can find.

It is harder to find the "pure" stuff with no cleaning agents and little to no solvents in the Meguiars, most of them are a "cleaner wax" (uses solvents potentially and other stuff we don't need) that you will not want to use since you probably already cleaned with novus. Probably would only need a very light spray of novus1 on a microfiber to take care of the cleaning in the future now that the source dirt is out of there.

Also as an aside, my local nappa ordered it from another store in the area and I picked it up next day, they transfer within their area. It is hard to find the non cleaner stuff- nappa was the only one out of the following to carry non-solvent wax.
Auto-zone
O'reileys
advance auto parts

None of them carried it in stock in any brand.

As to your last part- if you are not going to want to mess with this game I'd just wait to get the non cleaner wax- I'd argue that the "cleaner" wax with solvents is even going to be better than nothing, but if you want to set- and -forget this machine for long stretches wait for the non solvent stuff.

You realize that a playfield cleaned via hand (light pressure) with Novus 2 would take A Long time to cut through the clear clear coat.

The actual pinball does more havoc than anything.

Now if a guy used Magic Eraser every time, then yes that would do some damage as well.

Polish is abrasive. That's why it's a polish.

Blitz wax was what I used, but it looks like it hasn't been available in a while now.

The next closest thing is probably going to be P21S. Note the different waxes - 12701W (silver top) and 12700W (blue top).

12701W: https://www.amazon.com/P21S-12701W-100-Carnauba-Canada/dp/B016XVD8D0

Ingredients of 12701W: https://www.p21s.com/carnauba-wax-msds/

Ingredients of 12700W: https://www.p21s.com/concours-wax-msds/ (contains some naphtha, beeswax, silicone oil)

https://pinside.com/pinball/forum/topic/blitz-wax-alternatives

This has been argued and settled long ago: no wax with cleaning agents added, no wax with silicone added, no abrasives. Naphtha on a clean, soft rag will remove old wax build up and other ick without affecting paint. Use only that first time when dealing with a super dirty, abused playfield. Otherwise vacuuming and a gentle cleaning with a slightly moist soft rag is sufficient for regular maintenance. Pure carnuba wax paste is your best friend and is really the only wax product that any of us should be using.

I know this isn’t available anymore, but for reference I’ve been using this same 12oz jar for seven years on a rotating collection of 5-10 machines and have barely used a third of it. Pretty sure I’ve waxed my truck a couple times as well, so something similar should last a VERY long time.

IMG_5751 (resized).jpeg