Quote Originally Posted by Wolfwere View Post
Does buying additional quest slots change the likelihood of being able to earn all the rewards (outfits and emails)?

I realize that more simultaneous quests = more chances for legendary quests that increase your multiplier and give you max currency for the time spent. If all other things are equal, it would clearly be best to unlock all slots before unlocking the first reward.

The potential gotcha is that every time you unlock something (slots or rewards), it increases the cost of the ones you don't have yet. If you buy a slot too late in the event, it won't have time to pay for itself before the end and you could miss out on a reward.

How late is too late for buying a quest slot?

Has anyone unlocked all slots AND rewards without spending gems?
I don't know if I can be of any help, but I can say this:
I've always tried to hold back at least 300 rubies. The game's pretty fair about its premium currency distribution so far. I always unlock the first slot immediately after relaunching the game. I'm able to get online and restart new missions every hour for 14 to 16 hours a day. Shorter missions have a better outcome per hour as longer ones. With two slots, up to this day, I've always been able to secure all rewards, but barely so.