Tell me what to pay. I'll either pay it or not.
If there is an expectation to take a caddy, fine. Don't surprise me. I always enjoy my caddy rounds. I mostly carry my clubs, if there is a discount for walking, ok. I have paid the same to carry my clubs as riding dozens to hundreds of times.
Our game's pricing bounces around a lot. One course everyone here knows about went from no downstroke for a long time to a 25k downstroke last year. You want it, you pay for it.