My husband and I are fond of visiting standing stones and other prehistoric monuments. This June we plan to go to Scotland for 2 weeks, visiting Edinburgh for about 3 days, then Skye, Harris and Lewis, and Orkney. We plan to rent a car and drive from Edinburgh to Skye, since I gather this route is particularly beautiful. After this I'm not clear whether we should keep the same car or hop around by plane, renting cars on the different islands. How easy is it to drop off a rental car in some of these small places? Is there a route that makes possible the best plane connections? Thanks for any advice!