The use of OLAP sessions, conducted by professional analysts, seems to be the best way to assess the relevance of OLAP solutions based on former queries (in particular with user-centric approaches, like recommendation or personalization of queries). However, for scholar research teams, obtaining such logs is often difficult. Moreover, the complexity of the queries produced in these logs can lead to an important treatment of them, denaturing the performed analysis. In this paper, we propose a feedback from real OLAP sessions performed by graduate students in Business Intelligence. This feedback reports the design of questionnaires and the use of an original user interface to easily conduct real OLAP sessions.