As it seems there's no bonus for this mission. You just have to wait out the 30 minutes until you get the notification upon completion. As horde, Ka'la was unlocked prior to this mission, and she has a 100% chance to complete this one so obviously I suggest using her. :)
And now his watch has ended.
达丽拉·月牙 / 乌娜·斯莱舍
to raise this mission to a 100% chance of completion.
why is this the ONLY patrol mission that ever appears in my garrison? I want more exp but this is the only one that is ever there for the 'greater exp' missions!
I'm guessing the reason this mission keeps popping up for me is because I have an inactive level 90 follower. I really want to stop seeing it :), especially considering all my active followers are 100s.
This is basically one step up from latrine duty.
"I am Croman! Epic barbarian warlord! Smiter of ogres!"
"Yeah...I'm gonna need you to do a lap around yard for me. Alright?"
It's not mentioned anywhere, but this mission has an extremely long expiration timer (at least for me) making me think that this mission is intended to be mandatory. Most missions expire in 12-36 hours while mine has 2746 hours (114 days) left. I'm using the Master Plan addon in the screenshot I posted, but I don't think that's affecting the mission times.
Garrison Timer Mobile App
[Upon completion your 随从 will gain: ]
Guide to the Garrison Barracks
Missions and Followers math for maximising success chance
Warlords of Draenor Garrison Missions Guide