I just think it's funny that "RVing" has a "season." :) Why would you spend that much money and then not use your rig just b/c it's cold? It's not like you're actually "camping" if you have a shower and microwave on board!
But then, I go backpacking in Colorado winters so I'm a little weird that way.
Re: the toad, I don't see anything wrong with parking the rig at Walmart and then taking the toad out for dinner or whatever...no reason to drive a big rig around town. Parking at Walmart for a whole weekend does seem pretty silly, though...if I'm already paying several hundred dollars in gas, what's another $20/day for an actual RV site?