1. Don't buy insurance through Ctrip. Ctrip partners with Ping An Insurance, and in case of an accident, claims will be much more complicated than claiming directly abroad.
2. Green Motion was fantastic. First, they upgraded my vehicle for free. I bought full coverage insurance directly with them, which made the trip very worry-free. I had a flat tire once, and roadside assistance was very quick and free. I eventually replaced the tire, and the reimbursement was also very prompt. The whole trip was worry-free.
3. Drive cautiously in Scotland. The mountain roads are rugged, large vehicles are present, and the roads are narrow.