Does it actually pile up or does it just stay at 8 bonuses?

I also want to know this.

(Edit: I know it must be used within 48 hours, but does that mean u can have 16 bonus points, or is 8 the max)

I have had 10 in some,so my guess is 16

i've had 16. theoretically, at most you can have 18 (one of the bonuses is a 22h timer)

i had 21 at one point. 8 + 8 plus the 5 santa dropped off on christmas.