I recently drove my Model Y from Charlotte, NC, to Los Angeles and back. Went down to I-10 and came back I-40.
You've already gotten a lot of the same advice I would offer from others, so I'll just add a couple of observations.
I try to plan to get to a supercharger with between 10% and 20% state-of-charge. The battery charges a lot faster when it's low. Then, I usually only charge to 60%–70% and move on. There are some stretches of road--between Oklahoma City and Fort Smith, AR, for example--where you need close to a full battery, but not often. In fact, I really think that stopping twice for two "half charges" makes for a faster overall trip than charging fully once and skipping a charger. (But then, I'm older and I like to stop more frequently nowadays.)
That said, in California and also east of the Mississippi, superchargers are getting so thick on the ground that you could charge 2/3 of the way, and still skip chargers.
Hotels with chargers are awesome, but always plan to stay near a supercharger, just in case you can't charge at the hotel for some reason. (Hardware not working, all spots already taken, etc.) If you get to the hotel and can't charge, you will charge more quickly if you go on to the supercharger at night, while the battery is still warm, instead of waiting until the morning.
Finally, if you are reasonable sure of where you're going to be at the end of a day, it's best to book a hotel with a charger early, at least in the morning. I waited until the afternoon sometimes, and at least twice on my trip, the hotels with chargers were already booked.
Good luck, you're going to love road-tripping in a Tesla.