I am a tour guide, and used to take those huge brazilian groups to the parks (not anymore, thanks God!!! the groups are much smaller today). All tour guide courses taught the same thing. Turn left, because everyone goes right. Go straight to Splash Mountain, if it's summer. If you have only one day, get someone who's not riding Splash to get everyone fastpasses for Space Mountain while you ride. When you're done with Big Thunder, it's time to go to Space Mountain. If you have 2 days, it's a good idea to get a fastpass for Big Thunder, and leave Space for the second day. Then, you gotta start the 2nd day turning right and rush for Space Mountain. But then, you will have already ridden Splash and Big Thunder. If anyone wants to ride again, better wait until later in the evening.