I almost always get a car unless I'm staying in an Epcot area resort (I can bus to MK, and the other parks are walkable/boatable)---and even then sometimes I'll take a cab or an Uber to get somewhere in a hurry. With a car, I generally drive most places (sometimes including MK if I'm not staying in the MK area) unless I'm having a second BEvERage with dinner.
But, different people value things differently. So, what sounds more like a vacation to you?
1: Never having to drive in an unfamiliar place, let someone else handle the logistics of getting from point A to point B, and just leaving the car keys on the side table all week?
2: Never wondering when the next bus will come and/or whether you will have to stand for the trip?
My sense is that most people who try a car find that they like it, but it's also a place where you can save some money if you'd rather.