After not finding a seating plan online i asked on the plymuff boards and apparently their stands have 25 rows in them with row 'A' being at the front. I'm in row V :]] Seems the Ticket Office gave out some decent tickets early on
Or demand was high and they sold from left to right each block at a time and then from front to back within that block and then move across to the next block once the previous one is old out.
In that case my group will have the best or worst tickets, considering we had ours in hand on sunday..