Let me see if I get this straight: Beat (or re-beat) any 10 different Spartan Ops chapters this weekend and you get 10 games of Double XP WEEKS LATER by the time you've stopped giving a crap about it.
Does it really takes almost three weeks for your account to have this simple qualification read? Why bother when you don't even get the reward at a time when you actually WANT it? Why not just make a Double XP Weekend that everyone playing any mode gets double, it's not like beating 10 of those chapters in a specific time frame is much an achievement (pun not intended) to warrant only 10 more games' worth of XP.
PSN-BrandonSkyblade, Xbox Live-Red Skyblade 64 Steam-brandonskysword
Congrats on completing 10 Spartan Ops Chapters in Halo 4! This qualifies you for double XP on your next 10 Spartan Ops Chapters or War games matches. You'll see your double XP by May 24th, 11:59 pm GMT at the latest. Game on!