My wife and I are going to WDW this August and hope to get some usable dark ride shots. So, I'm turning to the Pentax users to give me some advice. I have a K20D and my wife has a K-x. We have a 28mm f2.8 and a 50mm f1.4. Due to the better ISO on the K-x would it be better to put the 28mm on it and use the 50mm on the K20? Last time we went (2009) I had a K100d super and the main problem was getting the camera to focus quickly enough. I understand that Pentax is not the best at low-light focussing. What tips do the experts advice? Would continuous focus be better or would it confuse the system? Multi focus points or one single focus point? Should we shoot in burst mode? Also, would using the OK button to focus be bettter and then using quick shift to alter the focus or should I go full manual focus? I'm not that good yet at MF especially in the dark. Sorry for the multitude of questions but any tips would be greatly appreciated.