Tim:
Interesting experience at Poppy Hills. You'll be happy to know that whilst our beloved regional association failed miserably in promoting walking at our 2nd course (Poppy Ridge), the mother course most definitely allows walking now and in fact it is encouraged - there are walking paths cut through the forest, etc.
As for "cart-ball", I'm not sure if Dan King heard this from Sandy Tatum or vice-versa, but Dan has been calling that in various forums for years. It all comes down to how hard-core one is about this, and what one values in golf... For me, the walk is a great part of it and I love it, but the hitting of the shots is always going to be the thing... So while I hate being forced to ride on a course that seems to be a doable walk, if it means a lot of hills or for various other reasons, I don't mind riding.
But we've battled this MANY times in this and other forums. Many, many, many times. We're all kinda entrenched in this, and that's ok.
TH