Proper Wax for New Vehicle

So I will be prepping a new car this weekend and intend to clay (trying out my new speedy prep fine grade mitt actually!) and use a sealant for my LSP. Car is brand new but the owner said the dealer's detail shop did the usual prep for delivery. After a quick inspection the pain looks great actually and probably has a coat of some cheap wax from the dealer...no noticeable swirls on paint in direct sunlight but the B-pillars are bad. Super greasy tire shine on the tires too...

So I will polish out the B-pillars but wondering what is the best prep on the paint for the sealant? As mentioned before I will definitely clay, and then I was thinking about using a pre-wax cleaner like Auto Finesse Rejuvenate followed by an IPA (in response to my earlier post). Is that overkill or can I get away with just the Rejuvenate or just the IPA? Would you recommend polishing the paint anyway with a lot polish just to be safe? Looks like the AF rejuvenate has some minor abrasives in it actually so if there are some small minor defects that should be sufficient to take car of that.
 
So I will be prepping a new car this weekend and intend to clay (trying out my new speedy prep fine grade mitt actually!) and use a sealant for my LSP. Car is brand new but the owner said the dealer's detail shop did the usual prep for delivery. After a quick inspection the pain looks great actually and probably has a coat of some cheap wax from the dealer...no noticeable swirls on paint in direct sunlight but the B-pillars are bad. Super greasy tire shine on the tires too...

.

Wait.......

Lots of dealers use a heavy/greasy glaze. So wait till ya do a good decon wash on it and start to see
 
Wait.......

Lots of dealers use a heavy/greasy glaze. So wait till ya do a good decon wash on it and start to see

Goodie...haha. By decon wash are you suggesting stripping with APC mixed in with the car soap? Or simply by washing, claying, and a light paint cleaner (Like Rejuvenate) will expose those defects?

I noticed that on my GTI actually. Once I started polishing I actually noticed some blemishes appearing! It's a new car and this was the first polish I did since getting the car.
 
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