I’m very interested in buying one and would be very interested in youre suggestions, tips, things you wish you new beforehand, small regrets, must haves and must knows….thanks community

Welcome! I ordered my car (sedan, EQE350V4), so if you don't see something on the lot that exactly matches what you want, it's always a possibility. If you get a car on the lot, you can probably get 7-10% discount relatively easily, depending on the dealer. If you happen to be a Mercedes-Benz Club of America member, you can usually get some additional incentives, though you'd need to be a member for a year. When I ordered mine, the dealerships were hardly offering any discounts at all - I had to use my MBCA incentives, which helped a good bit. In older days, it was certainly possible to get 12% off MSRP on a new car, though that's definitely harder to do today.

I have no regrets about the car at all - though that's because I ordered it to exactly what I wanted. Do get the extended warranty unless you switch cars quickly, or don't drive much. It's expensive, but I plan on keeping the car for a while. You have up to 30 days to decide, before the cost of the ELW is more expensive. There is an "amnesty" day once a year where you can still get it discounted. Also, your dealer can definitely sell it to you below the warranty's MSRP, so don't be afraid to ask. I personally don't pay for any of the other add-ons, such as coatings. I did those myself, and it was far, far cheaper.

As for must-knows, with the EQs it's all about the same as any standard EV, with some small exceptions. Make sure your Mercedes Me Connect is configured properly before you leave the dealership - otherwise, when your new profile shows up, it can overwrite settings. It's very convenient when it is set up though. Make sure to set your max charge to 80%, your dealer probably set it to 100%. Unless you don't care about battery longevity. For some reason, my dealership (or MB at the factory) by default disabled the steering assistant. Just turn it on in your driving assistant settings if your vehicle is so equipped, and you should be good to go.

If you have any questions, please post and we'll be happy to answer the best we can!

1) Be sure to go to the effort to try your model of interest with Airmatic suspension AND without Airmatic suspension. If you like the ride without Airmatic, then save yourself the upfront cost and later maintenance cost of this option.
2) Understand that Augmented Reality for the Head's up display (HUD) is only available on EQS models. The EQE can be optioned with Head's up display...and I love it on mine and would highly recommend it. The augmented reality part (dynamic "arrow" overlay) is available on the EQE but only for the Center screen and not Head's up. And, I am unimpressed by the augmented reality entirely. For one thing, the camera image that pops up to accommodate the arrow overlay is annoying and unnecessary from my point of view.
3) Don't automatically assume you want the running board option if you are going for the EQE SUV. Be sure to try one with running boards before ordering. You will likely find that while it may help a bit entering the vehicle, it absolutely makes it more difficult to get out of the vehicle...and it will dirty your pants in the process.
4) As far as negotiating for a car in the US is concerned, I can't comment.

Your profile does not show your location, e.g., US, Canada, UK, etc. Location makes a difference when it comes to availability, buy vs lease, and drive train.
- If you are in a year round warm/hot climate then the 350+ with smaller wheels and summer tires should be fine
- If you experience moderate winters then 4MATIC with run-flat All Season tires should be fine year round
- the EQE is nearing the end of MY23 so dealers will want to move out any existing inventory. Deals will be available but you may not find a exact match to your #1 configuraton
- to save even more try and find a low mileage CPO and negotiate hard
- 1st year models will have issues, 2nd year models will be better, etc. If you cannot handle issues that wait it out. Some fortunate buyers here have had zero issues... luck of the draw.
- MY25, 2 years from now, will come with an NACS charging connector and Tesla stations should be open to non Tesla charging by them providing lots of charging options. The charging infrastructure is only going to get better over time.

Most important for the last: plan on having a Level 2 home charger. The convenience of plugging in overnight is so convenient. No standing in the cold to pump gas and picking up all those bugs from the gas pump handle. Plan to charge in conjunction with meal/rest stops on those long trips that cannot be done with a full charge.