Fifth generation mobile communication (5G) networks promise lower latency, higher traffic volume and data rates compared to what we see nowadays. Among all technologies, Network Function Virtualization (NFV) and Software Defined Networking (SDN) techniques over the cloud-enabled radio systems play an important role to enable resource pooling, scalability, layer interworking and spectral efficiency. Despite the potential benefits, there is always an additional challenge on assuring quality of service and user experience, especially on real life scenarios targeted by 5G. In this paper, we initially frame the dynamic QoS/QoE assurance problem; then with the help of simulation on a real life scenario, where ~100,000 persons get in and out of the Camp Nou stadium in Barcelona, we demonstrate the efficiency of our proposed QoS/QoE assurance algorithm.