today I passed OCPJP with 96%. For preparation i used books from KS&BB (SCJP guide and OCP exam book). I have done all mock exams in OCP exam book, exam lab mock tests and 6 enthuaware mock tests in this order. In OCP exam book I have scored around 65-70%, in exam lab 70-75% and in enthuaware I had 85% in average. There are not so many tricky questions in real exam. 2 and half hour was enought time to finnish test. The room was little cold and there was lot of ouside noise from construction side (It did not bother me, I just want to tell that this can happen). I took the exam in VUE center in Slovakia.
Always read all the answers and I try to explain to yourself why is the given answer right or wrong. When you find a line which is throwing exception in the code don't mark the "exception thrown during runtime" without reading the rest of the code - there still can be compalation problem.