Completion Reward for vold ark?

[SakuraMidori]

Upon completing the Void Ark, players can also earn a separate reward once per week. This reward can be exchanged with Bertana in Idyllshire (X:5 Y:5) for items used to enhance equipment purchased with Allagan tomestones of esoterics.
* Reward eligibility is reset every Tuesday at 12:00 a.m. (PST).

So? does that mean everyone gets something at the end or it's random? id hate to think it be random RNG since well do i really need to say I mean i my self don't really want to run vold ark more then maybe 2 times a week why? well it get old very fast if you need to spam it for a very random drop at the very end what if you roll a 1 or 50 every few times? or if it's random and someone in the party randomly gets it then it will be real RNG hell