I've read several posts from people who stayed on site but rented a car and drove from their hotel to the various parks because they had been previously upset by long waits for busses, etc. If you have done this, do you think you actually saved time? It seems like by the time you walk to your car in the parking lot, drive to the park of choice, park your car, then walk or ride in a tram to the main gate, it would have been just as quick to wait for and take a bus, even if the wait was a bit long. What are the time differences? Are there times of the year and/or on-site locations where you wait for a bus and then have to let it go by because it is full?