What a fantastic tour I thought that was!! Though I am worn out as I just got back and need some Zzzzz's. But I will throw in a couple of other things. It only rained on us once during that time, but we did take a hike in that slight rain. Someone was wearing tennis shoes and they got soaked. I had my waterproof mid-ankle boots on and never felt it. There are quite a few times when you are hiking through grass so I would not wear white on those days, especially if expecting rain. And you never know when the rain could pop up. And it is so strange there as it gets dark about 10:30 pm and light again around 4:30 am.
As far as hotels, I had a discount rate at the Apex Waterloo which is extremely close to the Balmoral so I just walked my one piece of luggage over there on check-in day. And it was much cheaper. I also saw a Travelodge near the Apex. I took the bus in to the hotel from the airport rather than taxi, and I believe it was only 3.50 pounds. They have a place to store luggage on the bus and if you are not carrying a lot, I found this rather convenient and less costly than a cab (of course if you are staying at the Balmoral or coming in the day of the tour, Disney handles all this transportation for you). The bus driver was very helpful, and I got off at the last stop (Waverly Station). I would say the walk to the hotel was 5-10 minutes. Plus it was not raining.