Up to $500 reload bonus at Multi. 20x raked though...

[Rockfish]

My guess would be that you get 20 days from the time you use a particular code to clear a given bonus.

You probably can't stack them though. I'm guessing you have to finish one before you start the next one. Let me know if I'm wrong about that.

CLC laid out a good strategy for getting it all. You do the smaller ones first and leave the $500 for last.