My Sunday day ticket refund got issued on the 18th and the money came into my account about Tuesday this week.
Edit: In my email they said to allow up to 15 working days...
That's on the Saturday though and he's got the residency night in KOKO that he was doing for June, think it would make more sense if he was doing WOW stage TBA slot at 9pm on the Friday, since he's playing on the Thursday already.
Bit of an unrelated question, but how do you differentiate which campsite you are currently in? At other festivals there are coloured flags etc, how does it work at Glasto?