Thanks for your last few posts, good folks. Due to workload and a recent car accident, I haven't been on the site for a month. The car accident was caused by a young provisionally-licensed driver who ran a red light at about 15-20 mph over the limit and smashed into my car two feet forward of the driver's door. Wrote my car off but I'm OK, although will be hobbling for a while yet (bruising, soft tissue damage and joint injuries). Implications for my trip are: less focus on hiking long distance; fishing spots will have to be more accessible; reduced faith in other drivers at intersections. It happened at night, so I feel more comfortable driving during daylight and will restrict my USA driving accordingly.
Anyway, my flight is booked, plus the first 3 nights' accommodation. Am arriving at SLC on the Monday of the Memorial Day Weekend and staying there two nights to get over jetlag, then up to Idaho Falls. Will pick up the hire car on the second day in SLC and visit the natural history museum and maybe listen to the famous auditorium pin-drop, then commence the road trip in earnest.
Am now mulling over maps trying to decide whether to go from Idaho Falls to Jackson, up through Grand Tetons to Yellowstone and then over to South Dakota, or whether to go up through Montana from Idaho Falls at the start of the trip and come back through Yellowstone, Grand Tetons and Jackson. Changes to access during the period will be a factor. The NPS website is saying that (weather permitting), all Yellowstone entrances will be open by the end of May.
Foy - invaluable advice, thanks. I'm planning accordingly. Morgail - fascinating account of the mini icebergs - I can imagine how surreal that must have been with them clinking in the waves.
Although I love camping, I'm going to restrict this trip to hotels/B&Bs due to my hip injury.