They really do! And if are getting a hotel, we want one within walking distance. We also realized for us 2 nights was almost a minimum requirement if we're getting a room lol. With the stricter parking restrictions at a lot of the Harbor hotels, one night is great for starting early the next morning, but you can't necessarily leave your car parked the next day. But the park day is when you might want to take a break during the day, and then you'd have it that evening to avoid driving home late. So ideally for us...two nights.
As long as the driver doesn't mind the drive, one day trips are definitely doable! And the freedom with the pass of not feeling pressured to
have to go on every ride (or being bummed if you don't) is definitely worth it to us! Disney at a go go go pace can be fun, but I've really come to appreciate a leisurely take it all in pace, too!