Having some sort of ATV around the property is a must. We have managed a week or so here and there when our Mule was broken down, but we wouldn't manage long term without something similar.
So we had to replace it and decided since we liked it, we'd just get another one. The only difference in the new Mule is that it has 2 and 4 wheel drive and sits a little higher up. And the seat isn't coming apart!