It depends, last year i got there about half hour before the gates opened and we jumped onto the beach nearish the gates so we were quite close when we got it so it depends but i would say around 9am to get very near the front.
I got there last year at gone ten and got an AMAZING place just a few people away from the golden circle. Everyone runs as soon as they get through the gates so if ur a fast runner!! I'd say for a pretty good place like 10/11 because gates open at 12 i think... it depends how good a place you want!
kk well they open at 11 so i'll be fine if i get there at 9 then lol...and run fast!! 
