It has been a while since I have taken the GCH tour, but I really thought it was worth my time. It is a guided tour with a cast member. It was very informative and give interesting facts about the hotel.
There is a power walk offered to GCH guests only. They have it several times during the week at 7:30am.The walk takes about 30 to 45 minutes and is usually held in California Adventures before the park opens. I have been on this walk more than a few times and really enjoy it. The pace isn't too fast and comfortable. I highly recommend it.