CrazyOne, thanks for all the input.

Walking to Avis is fine, I think better than having to be driven back to an Enterprise office. According to the web sites, Avis costs a few dollars more. Convenience is more important than an extra $10. I will have to check details by phone, I think. My own car insurance will transfer to a rental plus my AmEx card will cover all that my insurance doesn't, so that's set. The Avis web site says they don't open until 9 but if I have to be driven back to Enterprise, leaving by 9:15 will be OK I guess.

The Westin concierge said I would be leaving against traffic and any time in the morning would be OK and that I would be hitting traffic coming back around 3 or 4.

I now drive a New Beetle, so will pick a small car; thanks.

You wrote that "coming all the way back downtown is fairly counterproductive." My flight Friday is at 11:30 AM and you are right, no business anticipated. This is the second piece of a month-long trip to several climates and I will have four pieces of luggage (one will be FedEx'd home after the third piece to which I will be flying.), a set of wheels in each hand. So I'll have to think about wheeling to Avis, being driven by Enterprise, coming back to the hotel with an Avis car for my bags, ... I'm at the Westin because the conference is at the Weston. I don't get enough points on my own to be loyal to any particular hotel though my SPG AmEx is my preferred card The conference is paying travel costs NTE a set amount and I think I'll come in just under their maximum with the shuttle and staying the last night at the Westin. Of course the car rental and side-trip is my own expense. So I need to factor all these things in and think about what will be the most convenient, and I think phone Avis.

I got some routings from AAA and from Google - they all start on 376 and then vary. I thought I'd also ask the concierge and the car rental and then choose. A bit longer is OK if its simple. My intention is to go first to Kentuck Knob, then back to Falling Water.

I guess I can wait until mid-September to make the actual car and tour reservations, and maybe change the last night.

This is sounding very appealing and manageable. I appreciate all the help.

Sylvia