I'm doing the same thing, adjusting to cities that don't require a rental car. For example, I went to Fort Myers right before things really got nuts on rental car rates, I don't think I'd go there again now as that city is pretty spread out. But other places I've been to or plan to go to (Nashville, Las Vegas, Chicago, Ft Lauderdale, Miami, Orlando) all are fine without one. I do have tentative trips to Denver and St Louis and those are cities I'm not sure I'll be able to do much without a rental car.. it's too bad that makes those trips tentative for that reason only!