I have a trip planned to Scotland at the end of the month, and am planning to spend some time on Skye and Harris and Lewis. At the end of this part of the trip, I'm looking at taking a ferry from Tarbert on Harris to Uig on Skye, set to arrive in Uig at 1:20 p.m. I'm then hoping to drive to Armadale to catch a ferry to Mallaig, ideally on the same day. I will have a rental car, and I see that it's less than 60 miles, but I have seen a lot of postings about how crowded/busy Skye has become recently. What is a realistic driving time for this trip on an afternoon at the end of July? How much of a safety net do I need if I want to pre-book a ferry?