I have to say I find the complete opposite, 6hrs plus no problem. I did specify the 18 way seats on purpose after reading reviews on the 14 way, and to me they are very good. Also no complaints from any passengers.
My insurance company insisted on having it activated, it's not cheap but to be fair it does seem to be very good, and my experience is just the same as another reply, the Vodaphone people are very friendly and helpful. In fact the total opposite of what we have come to expect. But most...