EESystem 2 Hr Session If you wish to book a longer session in one day than 2 hours, then book another 2 hour session straight after your first one. We have a 30 min changeover time between each session but if you have back to back sessions booked, you are welcome to stay in the EESystem lounge during the changeover. In essence then, you will get 4.5 hours if you book 2 x 2 hour sessions and a 7 hour session if you book 3 x 2hour sessions. Enjoy!