Yes. That was an easy article!
If you don’t know what EAS is, it stands for Early Arrival Service, and allows you to take your computer in and get set up the day before the actual event starts. Off the top of my head, you’re not actually allowed to enter the venue and set your equipment up until 9am on the Friday morning normally, whereas buying EAS (15 GBP) allows you to enter with your equipment and setup at roughly 6pm on the Thursday. Whilst Multiplay do not guarantee stable internet until Friday morning, it hasn’t normally been an issue in the past.
Being setup and inside early enables you to meet and greet your fellow LAN’ers and enjoy the feeling of starting the Lan relatively early! I highly recommend you pay the extra monies and enjoy the extra few hours of LAN time.