I used the double rep on each of my two characters. On my Level 40 main I used the three hours to get just over 5000 rep to master nades and fully complete my pirate. On my alt, I went from the very start of 23 to 6000 into Noto 24. I took my grenades from level 1 to 10, and gained a level on pistol, dagger, cutlass and doll.
I say more double rep holidays! I also sent Disney a suggestion that although the double rep is much appreciated, seeing a little double gold would be nice too!
All in all, a very productive time for me. I thought that I was never going to get those nades to 25 on my Level 40.