Hi Dave,
Absolutely! You are welcome to drop your car at your Walt Disney World resort upon your arrival, even if you are a few hours ahead of your official check-in time. When you get to the resort entrance, you will simply show your ID to security and let them know you are checking in. They will direct you to parking.
We do this all the time. We only live a little more than an hour from Walt Disney World, so we always drive and could go directly to the theme parks. But part of the vacation for us is being able to let someone else do the driving. We like the flexibility of park-hopping without moving the car from parking lot to parking lot. And
Walt Disney World transportation deposits you in close proximity to the entrance at each park or in the center of the action at Disney Springs.
I recommend doing
online check-in and noting that you will arrive early. Occasionally, your room will be ready for you when you get there, even if it is before the official check-in time. If so, you can unload your things before you head to the parks. If it's not, you will get a text or email with your room number when it is ready.
If you have your MagicBands in advance, there should be no need to visit the front desk. You can simply head directly to your room after your first day in the theme parks. (If you don't want to leave your luggage in the car all day, you can deposit it with bell services upon your arrival.)
Thanks for your question, Dave. Please let us know if we can help in any other way as you plan your Walt Disney World vacation. Enjoy!
Wilma