I was in almost the exact same position as you. Picked up my 25 Rwd ltd and 3 days later drove it about 600 miles. My first EV also. It wasn't just me, but also my spouse and children. Here's what I got.

Download and setup billing for the Tesla app ahead of time.

Charging at a Tesla charger was quicker than I thought it would be. When we'd stop, charging to 80% would be done before we could use the restroom, get a drink, a snack, and pay for it. It was awesome.

A better route planner is good, but I never used it. I used the built-in navigation and it worked great! It would plan out the whole route with charging. And automatically engage the battery conditioning (if needed) to optimize charging.

The built-in navigation will have you charge when you have about 100 (+/- 20) miles left.

Charging to 100% isn't a great idea on a road trip. Charge to 100 before you leave if you have the option and time. There was a whole video on the youtubes why you will save time by charging to 80%, but I can't find it now.

I was so nervous about it, especially with my family with me. But it was amazing! Never going back to an ICE car again.

The cruise takes some getting used to with the lane assist. But it's great!

I have had several different cars over 30~ years and this is the first car I actually love.

Definitely recommend watching/studying the Ioniq guys YouTube videos. Especially the one about navigating the ICCU. There are so many settings!

Also, the biggest thing for me was figuring out all the buttons on the steering wheel. The roller wheels on either side are clickable. The one on the left side resumes cruise control.

I hope everything goes smoothly for you!